KR100348162B1 - Side air bag cushion, manufacturing and folding method thereof - Google Patents

Abstract

The present invention forms the chambers with reinforcing fabric and coated fabrics, thereby preventing the initial loss of safety and inflator gas pressure according to the contact area of the passenger, thereby protecting the passenger and maximizing cushion durability. It is an object of the present invention to provide a cushion, and an easy method of manufacturing and folding the side airbag cushion.

The side airbag cushion of the present invention divides the internal space of the main body 10 into the lower chamber 20 and the upper chamber 30, and inflates by injecting the gas of the inflator through the lower chamber 20 and the inlet through. However, a single first fabric 40 formed by arranging a plurality of vents 42 in the center in a straight line so as to form a tether 41 that divides the lower chamber 20 and the upper chamber 30 into one body. And a pair of second fabrics 50 stacked and sewn to the bottom of the first fabric 40 and the second fabrics 50 are sewn on the second fabric 50 from the heat of the gas. It consists of a pair of reinforcing fabrics 60 to protect the inlet 51.

Description

Side air bag cushion, manufacturing method and folding method {Side air bag cushion, manufacturing and folding method

The present invention relates to a side airbag cushion, a method for manufacturing the same, and a folding method, and in particular, a side airbag cushion having an integrated tether formed therein, a method for manufacturing a cushion that can be sewn from the outside, and an initial pressure inside. It relates to a folding method of the cushion which can be uniformly dispersed in.

In general, drivers using cars that are being upgraded and large in size are interested in not only basic car performances such as driving, ride comfort, and speed, but also safety devices that can protect passenger safety.

Such vehicle safety devices, such as seat belts, airbag devices, steering safety axles, and the like, are designed to automatically operate in the event of a car accident to maximize the driver's protection.

In particular, the airbag device injects compressed gas momentarily into the cushion in case of a sudden deceleration of the vehicle (car crash, etc.), and the cushion expands at high speed to cover the front of the driver and the front passenger. It protects the passengers from objects such as the front glass of the car or the front steering wheel.

In recent years, in order to further protect passengers and drivers, airbag devices have been developed and developed to protect passengers and drivers against frontal collisions, rear collisions and side collisions.

In particular, the side airbag device is mounted in place, such as on one side of the seat, or a pillar on the side of the car, primarily protecting the thorax and head of the passenger and driver.

The side airbag cushion according to the prior art uses the inlet portion 8 so that a high-temperature, high-pressure gas p generated from an inflater, which is an igniter, is filled inside, such as a balloon close to a rectangular parallelepiped. (1).

The conventional side airbag cushion is divided into a lower chamber 2 (low chamber) and an upper chamber (3 high chamber) through a tether 6 such as a diaphragm located therein.

The tether 6 also forms a number of vents 7 so that the hot, high pressure gas p of the inflator can be transferred from the lower chamber 2 to the upper chamber 3.

On the other hand, the conventional side airbag cushion cuts out the fabric panels 4, 5 to form the skin of the body 1, and forms therein the chambers 2, 3, as described above, in the tether 6 Is sewn.

The conventional side airbag cushion thus formed is folded into a simple corrugation shape and seated inside the airbag housing.

However, the side airbag cushion according to the prior art has the disadvantage of increasing the unit cost, with the manufacturing inconvenience to sew the tether from the outside by sewing the fabric panels in order to sew the tether inside the cushion.

In addition, the conventional side airbag cushion requires a relatively large workforce for work such as flipping the sewn fabric panels, there is a disadvantage that the manufacturing work efficiency is lowered in mass production.

In addition, since the conventional side airbag cushion is simply folded in a pleated shape, there is a disadvantage that it is not possible to smoothly and uniformly disperse high-temperature and high-pressure gas inside the chamber during initial operation.

In addition, the conventional side airbag cushion has a simple inlet shape, there is a disadvantage that can not effectively induce high-temperature, high-pressure gas.

In addition, the conventional side airbag cushion is formed of a simple fabric material, there is a disadvantage that can not safely protect passengers and drivers according to the part of the body in contact with the lower chamber and the upper chamber.

The present invention has been made to solve the problems of the prior art as described above, by forming chambers with reinforcing fabric pads and coated fabric pads, the safety and initial pressure of the inflator gas depending on the contact area of the passenger It is an object of the present invention to provide a side airbag cushion that can prevent loss, protect passengers, and maximize cushion durability.

In addition, another object of the present invention is to provide a method of manufacturing a side airbag cushion that is easy to manufacture and can lower the production cost by forming a tether integrally by sewing the fabric pads from the outside.

In addition, another object of the present invention is to provide a folding method of the side airbag cushion to maximize the airbag operating performance by folding the cushion corresponding to the inflow direction of the high-temperature, high-pressure gas in the airbag housing.

1 is a perspective view for explaining the configuration of the side airbag cushion according to the prior art,

Figure 2 is a perspective view for explaining the shape of the side airbag cushion according to an embodiment of the present invention,

3 is an exploded perspective view for explaining the configuration of the side airbag cushion shown in FIG.

4 is a block diagram illustrating a method of manufacturing the side airbag cushion shown in FIG. 3;

5 and 6 are a plan view and a side view for explaining a method of coupling the side airbag cushion shown in FIG.

7 is a plan view for explaining a sewing method of the side airbag cushion shown in FIG.

8 to 14 are front views and plan views for explaining a folding method of the side airbag cushion shown in FIG.

♠ Explanation of symbols on the main parts of the drawing ♠

10: main body 20: lower chamber

30: upper chamber 40: first fabric

41: Tether 42: Bent

45 ": Corrugation 49: Cover

50: second fabric 60: reinforcing fabric

The present invention for achieving the object as described above is divided into the lower chamber and the upper chamber, by injecting the gas of the inflator through the inlet through the lower chamber, in the inflated side airbag cushion, A single first fabric formed by arranging a plurality of vents in a straight line at the center and a pair of second fabrics stacked and sewn under the first fabric so as to form a tether separating the lower chamber and the upper chamber into a single body. And a pair of reinforcing fabrics sewn on the second fabrics to protect the inlet of the second fabric from the heat of the gas.

In addition, another object of the present invention is to sequentially laminate the first fabric, the second fabric and the reinforcing fabric of the side airbag cushion, and to match the two ends of each of the fabrics, respectively, the second fabric and the reinforcing fabric Arranged symmetrically with each other, the first sewing lines and the second fabrics are sewn along the first sewing lines in the center, and the stacked second fabrics and the reinforcing fabrics are respectively along the second virtual lines for sewing. Stitching, folding the first fabric upwards, folding the second fabrics and the reinforcing fabrics downward, and folding the first and second fabrics and the reinforcing fabrics to the third virtual line It is achieved by a method of manufacturing a side airbag cushion comprising the step of sewing together each other.

Further, another object of the present invention is to fold the right end of the first fabric and the second fabric at a right angle relative to the first fold line in the side airbag cushion, the right end of the folded fabrics relative to the second fold line Folding in the opposite direction to form a corrugated continuously folded corrugation, facing both ends of the corrugation downward, folding the upper and lower portions thereof, and forming both end portions of the corrugation second fabric. And folding up upwards at a point coinciding with the lower side of the inlet, and bringing the pleated portion closer to the inlet by the cover.

In the following, with reference to the accompanying drawings a preferred embodiment of the installation structure of the airbag cushion according to the present invention will be described in detail.

In the drawings, Figure 2 is a perspective view for explaining the shape of the side airbag cushion of the present invention, Figure 3 is an exploded perspective view for explaining the configuration of the side airbag cushion shown in FIG.

First, as shown in FIG. 2, the side airbag cushion of the present invention forms an integrated tether part (not shown) in the inner space of the main body 10, and is divided into a lower chamber 20 and an upper chamber 30. have.

The main body 10 is formed of a first fabric 40 forming the skin of the upper chamber 30 and a pair of second fabrics 50 sewn to form the skin of the lower chamber 20.

In particular, the lower chamber 20 is provided with reinforcing fabrics 60 on the inner side of the inlet 51 of the second fabric 50 originating from the initial inflator (not shown), so that the heat of the relatively high temperature and high pressure gas is reduced. Has a strong structure. Here, since the inlet part 51 extends the diameter as it extends into the lower chamber 20, it can flow a gas smoothly.

In addition, the main body 10 has a fin-shaped outer portion 67 when sewn.

As shown in Fig. 3, as described above, the first fabric 40 forming the side airbag cushion of the present invention has an area that can form the skin of the upper chamber 30 described above in a rectangular shape, and is an integrated tether. A plurality of vents 42 are formed in the center of the first fabric to be 41. These vents 42 are arranged in a straight line.

Since the thickness of the first fabric 40 and the density of the fabric are determined according to the safety standard of the general side airbag cushion, the number of the first fabric 40 is not limited in the present invention. Since the part is in contact with the face and is not greatly influenced by the gas pressure change inside the upper chamber 30, it is formed of a fabric material having almost no surface processing. This is to gently damp the amount of impact applied to the head of the passenger in contact.

In addition, the second fabrics 50 are a pair of fabric materials symmetrical with each other, and is cut to form an inlet portion 51 having an expanded diameter when sewn. In particular, the second fabrics 50 are coated to maintain the pressure in the lower chamber 20 as described above when the impact amount applied to the passenger's chest is attenuated. That is, the finely woven second fabric 50 maintains an airtight surface by surface-treating the micro-gaps of the direct irradiation with a coating material such as rubber or silicone.

In addition, the reinforcing fabrics 60 are cut in pairs to match the outer surfaces of the second fabrics 50, respectively, and are formed to have smaller and inclined side cross-sections 62 than the second fabric 50 for light weight. It is. Here, the reinforcing fabric 60 can be coated and can provide better air tightness of the cushion.

In particular, the inlet portions 51, 61 of the second fabric 50 and the reinforcing fabric 60 are formed with a plurality of bolt fixing holes 53, 63, respectively, coincident with each other.

Hereinafter, a method of manufacturing the side airbag cushion of the present invention as described in detail above will be described.

In the drawings, Figure 4 is a block diagram for explaining the manufacturing method of the side airbag cushion shown in Figure 3, Figures 5 and 6 are a plan view and a side view for explaining the coupling method of the side airbag cushion shown in FIG. FIG. 7 is a plan view illustrating a sewing method of the side airbag cushion shown in FIG. 3.

4 to 6, the first fabric 40 and the second fabric 50 and the reinforcing fabric 60 of the side airbag cushion of the present invention are sequentially stacked (S10).

At this time, the worker coincides both ends of each of the fabrics 40, 50, 60 so that an integral tether portion 41 having a plurality of vents 42 is formed in the center. At this time, the second fabric 50 and the reinforcing fabric 60 are arranged symmetrically to each other. Then, the first fabric 40 and the second fabric 50 are sewn along the first virtual line 46 for sewing in the center (S20).

In addition, the stacked second fabrics 50 and the reinforcing fabrics 60 are sewn along the second virtual lines 56 for sewing, respectively (S30). This reinforces the bolted inlet 51 and serves to make the second fabrics 50 and the reinforcing fabrics 60 contact more tightly.

And, as shown in Figure 6, the sewn fabrics 40, 50, 60 are spread out in a butterfly shape by the operator. That is, the worker folds the first fabric 40 upward, respectively, and folds the second fabric 50 and the reinforcing fabric 60 downward (S40).

after that. As shown in FIG. 7, the folded first fabric 40, the second fabric 50, and the reinforcing fabric 60 are sewn together along the third virtual line 66 for outer shell sewing (S50).

Thus, in the method of manufacturing the side airbag cushion of the present invention when the fabrics 40, 50, and 60 are sewn from the outside, the integrated tether 41 is formed inside the cushion in which the lower chamber 20 and the upper chamber 30 are formed. ), Eliminating the additional work of conventionally inverting fabrics to sew the tether.

In the following, the folding method of the side airbag cushion of the present invention as described in detail above will be described.

8 to 14 are front views and top views for explaining a folding method of the side airbag cushion shown in FIG. 3.

As shown in (a) and (b) of FIG. 8, in the folding method of the side airbag cushion of the present invention manufactured by the manufacturing method described above, the integrated tether 41 inside the cushion body 10 is referred to. The first fabric 40 is located at the top, the second fabric 50 is located at the bottom, and the inlet portion 51 is disposed to face in the left direction from the bottom of the cushion.

The side airbag cushion of the present invention acts on the inner surface of the second fabric 50 first the compressive force of the high temperature, high pressure gas coming through the inlet 51 of the second fabric 50, and at the same time, While the fabric 50 is unfolded to form the lower chamber, it is folded to exert a compressive force of the gas on the inner surface of the first fabric 40.

That is, as shown in (c) and (d) of FIG. 9, the right end 45 of the fabrics 40 and 50 forming the side airbag cushion is perpendicular to the first fold line 54. Fold.

And, as shown in (e) and (f) of Figure 10, the right end 45 'of the folded fabric (40, 50) with respect to the second fold line 54' is folded in the opposite direction to the above In this case, the right ends 45 and 45 'overlap and form a right angle.

The fabrics 40, 50 of the side airbag cushion that are continuously folded in this manner will form a pleat 45 " folded continuously as shown in Figs. 11 (g) and (h). At this time, the width of the pleats 45 "in the transverse direction becomes relatively very dense. In addition, since the corrugation part 45 "can unfold the upper part 45a and the lower part 45b almost simultaneously by the pressure of the gas of high temperature and high pressure through the inlet part 51 of the 2nd fabric, high operating efficiency In addition, the pleats 45 "are very compressed in the thickness direction (o), and the upper portion 45a is folded to overlap the lower portion 45b relative to the center portion (q),

In such a case, as shown in FIGS. 12 (i) and (j), the upper part 45a and the lower part 45b of the folded wrinkled part 45 "face both ends downwardly.

Further, both ends of the upper part 45a and the lower part 45b of the pleated part 45 "are folded upward at a point coinciding with the lower side 51 'of the inlet part 51 of the second fabric (r). .

Thus, as shown in FIGS. 13 (k) and 1 (l), the pleats 45 " have almost the same height as the height of the inlet portion 51 of the second fabric and are reduced to a compact and compact size. .

As shown in (m) and (n) of Fig. 14, the side airbag cushion of the present invention, which is folded in the manner described above, is wrinkled by a cover 49 that is temporarily covered for the purpose of fixing wrinkles. 45 " is folded closer to the inlet 51 of the second fabric.

Here, the cover 49 has a shape such as a crepe which can enclose the pleats 45 ", and includes a fixing means such as a snap button or a velcro fastener, and thus the inlet portion 51 of the second fabric. ) Is fastened.

The folded side airbag cushion of the present invention is unfolded in the reverse order of folding as described above upon operation of the inflator.

That is, the cover 49 is separated from the corrugation part 45 "by the expansion of the cushion, and the upper part 45a and the lower part 45b of the corrugation part 45" are straightened. At the same time, the lower chamber 20 is filled with a high-pressure gas of the inflator, and the gas is filled in the upper chamber 30 through the vent 42 of the integrated tether 41.

Therefore, the side airbag cushion of the present invention is such that the development of the upper chamber 30 over the lower chamber 20 in contact with the chest of the passenger.

As described in detail above, the side airbag cushion of the present invention forms an integrated tether inside and is formed by sewing the respective fabrics from the outside, thereby reducing the number of unnecessary manufacturing processes in manufacturing and lowering the product cost. have.

In addition, the side airbag cushion of the present invention has the advantage of reducing the number of manufacturing process to increase the manufacturing operation efficiency during mass production.

In addition, since the side airbag cushion of the present invention is folded to expand the upper chamber on the lower chamber, it is possible to uniformly disperse high-temperature and high-pressure gas in the interior of the cushion during initial operation, so that the relatively developed performance There is an excellent advantage.

In addition, since the side airbag cushion of the present invention has an inlet portion that extends, the side airbag cushion has an advantage of effectively inducing high-temperature and high-pressure gas to be dispersed into the cushion.

In addition, since the side airbag cushion of the present invention coats the lower chamber, and the upper chamber differentially uses ordinary airbag cushioning materials, the pressure of the lower chamber is kept relatively stable, and the passengers contact the upper chamber. There is an advantage that can safely protect the face area.

In addition, the side airbag cushion of the present invention has the advantage that it does not melt or rupture because the reinforcing fabric is padded to prevent the inlet portion directly exposed to the high-temperature, high-pressure gas is initially injected.

The technical idea of the side airbag cushion, its manufacturing method and folding method of the present invention has been described above with reference to the accompanying drawings, but this is by way of example and not by way of limitation. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (8)

In the inflated side airbag cushion by dividing the inner space of the main body 10 into the lower chamber 20 and the upper chamber 30, by injecting the gas of the inflator through the inlet blown through the lower chamber 20 , A single first fabric formed by arranging a plurality of vents 42 in a central shape so as to integrally form a tether 41 that separates the lower chamber 20 and the upper chamber 30; A pair of second fabrics 50 which are laminated and sewn to the bottom of the first fabric 40 and coated; A pair of reinforcing fabrics (60) sewn on the second fabrics (50) to protect the inlet portion (51) of the second fabric (50) from the heat of the gas; Side inlet bag cushion, characterized in that a plurality of bolt fixing holes (53, 63) are formed in each of the inlet (51, 61) of the second fabric (50) and the reinforcing fabric (60). In the manufacturing method of the side airbag cushion according to claim 1, Sequentially stacking the first fabric 40, the second fabric 50, and the reinforcement fabric 60 of the side airbag cushion (S10); The second fabrics 40 and the reinforcing fabrics 60 are arranged to be symmetrical with each other by matching both end portions of the respective fabrics 40, 50, and 60, respectively, and a central first virtual line for sewing ( The first fabric 40 and the second fabric 50 are respectively sewn along the step (S20), The stacked second fabrics 50 and the reinforcing fabrics 60 are sewn along the second virtual lines 56 for sewing, respectively (S30); Folding the first fabric 40 upward, respectively, folding the second fabric 50 and the reinforcing fabric 60 downward (S40), Said folded first fabric 40 and the second fabric 50 and the reinforcing fabric 60, characterized in that it comprises a step of sewing each other along the third virtual line 66 for outer shell sewing (S50) Method of manufacturing an airbag cushion. In the folding method of the side airbag cushion according to claim 1, Folding the right end 45 of the first fabric 40 and the second fabric 50 at a right angle relative to the first fold line 54 in the side airbag cushion, The right end 45 'of the folded fabrics 40, 50 is folded in the opposite direction with respect to the second fold line 54' to form a corrugated portion 45 " folded continuously Wow, Folding the upper part 45a and the lower part 45b of the wrinkle part 45 "so that both ends of the wrinkle part 45" face downward; Folding both ends of the pleated portion 45 "upward at a point coinciding with the lower side 51 'of the inlet portion 51 of the second fabric 50, And folding the pleated portion (45 ") closer to the inlet portion (51) of the second fabric (50) by the cover (49). delete delete delete The method of claim 1, The reinforcing fabrics (60) and the inlet portion (51) of the second fabrics (50) side airbag cushion, characterized in that it has an inwardly extending shape while extending inward, so as to guide the gas smoothly. The method of claim 3, The cover 49 has a shape such as a crepe to enclose a pleated portion 45 ", and includes a fixing means such as a snap button or a velcro fastener, and an inlet portion of the second fabric 50. A folding method of the side airbag cushion, which is fastened to (51).