JP6810089B2 - How to store the airbag device and airbag cushion - Google Patents

Description

The present invention relates to an airbag device provided with an airbag cushion stored in a storage unit, and a method for storing the airbag cushion in which the airbag cushion is stored in the storage unit.

Airbag devices are almost standard equipment on recent vehicles. The airbag device is a safety device that operates in an emergency such as a vehicle collision, and receives and protects occupants by using an airbag cushion that expands and expands with gas pressure. There are various types of airbag devices depending on the installation location and application. For example, the driver's seat has a front airbag in the center of the steering wheel, and the instrument panel and its surroundings are located near the passenger seat, mainly to protect the front seat occupants from front-rear impacts. Passenger airbags are provided. In addition, in order to protect each occupant in the front and rear rows from side collisions and subsequent rollovers, curtain airbags that expand and expand along the side windows are installed near the ceiling of the wall, and seats. A side airbag that expands and expands to the side of the occupant is provided on the side of the occupant.

In order to fully protect the occupants with the airbag cushion, it is necessary to efficiently inflate and deploy the airbag cushion toward the target range. Therefore, for example, in Patent Document 1, the method of folding the airbag cushion is devised so that the airbag cushion is preferentially expanded and expanded from a predetermined portion.

Japanese Unexamined Patent Publication No. 2012-30717

In Patent Document 1, the passenger seat airbag cushion is set to expand and expand from the windshield side, that is, the front side in the front-rear direction of the vehicle. However, there are situations in which it is desirable to adjust the deployment behavior of the airbag cushion in the vehicle width direction. For example, the airbag cushion may have a shape that spreads unevenly inward (inside the vehicle) in the vehicle width direction. Such a cushion having a shape biased toward the inside of the vehicle tends to swing in the width direction of the vehicle because gas also flows in the width direction of the vehicle, and the deployment behavior tends to be irregular.

In view of such problems, it is an object of the present invention to provide an airbag device capable of adjusting the deployment behavior of the airbag cushion in the vehicle width direction with a simple configuration, and a method of storing the airbag cushion.

In order to solve the above problems, a typical configuration of the airbag device according to the present invention is formed as a three-dimensionally inflatable bag and a predetermined storage portion provided in front of the front seat of the vehicle. Airbag cushions that are stored in the storage unit in a folded or folded storage form, and side pleats that are provided on the outer side of the airbag cushion and have mountain folds and valley folds repeated in the vertical direction of the vehicle. The area and the long pleats, which are provided on the outer side of the airbag cushion and are mountain-folded and longer than the side pleats area when extended to the outside of the vehicle, are provided, and the long pleats are folded to at least the side pleats area. It is characterized by covering a part.

When the above airbag cushion expands and expands, it is difficult for gas to enter the outside of the airbag cushion because the long pleats are bent, and when gas is supplied, the outside of the airbag cushion is slightly smaller than the inside of the vehicle. There is resistance. Therefore, the timing of expansion and deployment of the airbag cushion on the outside of the vehicle is slightly later than that on the inside of the vehicle. Therefore, with the above configuration, the deployment behavior of the airbag cushion can be adjusted in the vehicle width direction, such as expanding and deploying the airbag cushion from the inside of the vehicle first.

The airbag device adjusts the deployment behavior of the airbag cushion by a simple configuration using long pleats. Therefore, it is advantageous in terms of labor and cost as compared with the case of changing the shape of the airbag cushion.

The above-mentioned long pleats may be provided above the side pleats region of the vehicle and may be bent downward of the vehicle to cover at least a part of the side pleats region. This configuration also makes it possible to carry out long pleats that add resistance when the airbag cushion expands and expands.

The above-mentioned airbag cushion may have a main bag that expands and expands in front of the front seat, and a center bag that has a smaller capacity than the main bag that expands and expands inside the main bag. Since the main bag on the outside of the vehicle has a larger capacity than the center bag on the inside of the vehicle, the above-mentioned airbag cushion tends to swing in the vehicle width direction. Therefore, the above-mentioned long flap can be used more effectively.

The above airbag cushion may be for the passenger seat. The airbag cushion for the passenger seat (passenger airbag) has a relatively large capacity as compared with other airbag cushions for the driver's seat and the like. Therefore, the way the gas flows is easily reflected in the deployment behavior. The long flap described above can be used more effectively.

In order to solve the above problems, in a typical configuration of the airbag cushion storage method according to the present invention, an airbag cushion formed as a three-dimensionally inflatable bag is provided in front of the front seat of the vehicle. A method of storing an airbag cushion to be stored in a predetermined storage unit, which is a process of creating a side pleated area in which a side pleated area is provided by repeating mountain folds and valley folds on the outer side surface of the airbag cushion in the vertical direction of the vehicle. A long pleats making process that provides long pleats that are mountain-folded and longer than the side pleats area when extended to the outside of the vehicle on the outer side of the airbag cushion, and at least the side pleats area by bending the long pleats. It is characterized by including a covering step of covering a part of the airbag and a storage step of storing the airbag cushion in a storage form in a storage portion.

The components corresponding to the above-mentioned technical idea in the airbag device and the description thereof can also be applied to the storage method of the airbag cushion.

In the above-mentioned long pleats making step, the long pleats may be provided above the side pleats region of the vehicle, and in the covering step, the long pleats may be bent downward of the vehicle to cover at least a part of the side pleats region. This configuration also makes it possible to carry out long pleats that add resistance when the airbag cushion expands and expands.

According to the present invention, it is possible to provide an airbag device capable of adjusting the deployment behavior of the airbag cushion in the vehicle width direction with a simple configuration, and a method of storing the airbag cushion.

It is a figure which illustrates the outline of the airbag device which concerns on embodiment of this invention. It is a figure which illustrated the cushion at the time of expansion expansion of FIG. 1B from each direction. It is a figure which illustrated the process of accommodating the airbag cushion of FIG. 2A in order. It is a figure which illustrated the process of accommodating the airbag cushion of FIG. 2A in order. It is a figure which illustrated the process of accommodating the airbag cushion of FIG. 2A in order. It is a figure which illustrated the process of accommodating the airbag cushion of FIG. 2A in order. It is a figure which illustrated the process of accommodating the airbag cushion of FIG. 2A in order. It is a figure which illustrated the deployment behavior of the airbag cushion of the storage form of FIG. 7C.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in such an embodiment are merely examples for facilitating the understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are designated by the same reference numerals to omit duplicate description, and elements not directly related to the present invention are not shown. To do.

FIG. 1 is a diagram illustrating an outline of an airbag device 100 according to an embodiment of the present invention. FIG. 1A is a diagram illustrating a vehicle before the operation of the airbag device 100. In FIG. 1A and other drawings, the front-rear direction of the vehicle is indicated by arrows F (Forward) and B (Back), the left and right directions of the vehicle width are indicated by arrows L (Left) and R (Right), and the vertical direction of the vehicle is indicated by arrows. Examples are U (up) and D (down).

In the present embodiment, the airbag device 100 is embodied as one for the front seat in a left-hand steering wheel vehicle, particularly for the passenger seat (front row right seat). In the following description, the passenger seat 104 on the right side of the front row is assumed. Therefore, for example, the outside of the vehicle in the vehicle width direction means the right side of the vehicle, and the inside of the vehicle in the vehicle width direction means the left side of the vehicle.

The airbag cushion of the airbag device 100 (hereinafter, cushion 108 (see FIG. 1B)) is housed in a storage portion 106 provided in the instrument panel 102. The storage portion 106 is installed in front of the vehicle in the passenger seat 104, and the cushion 108 restrains the occupant in the passenger seat 104 from the front of the vehicle. The cushion 108 operates due to an impact detection signal sent from a sensor (not shown), and the expansion pressure forms an opening in the lid portion 107 of the storage portion 106, and the cushion 108 expands and expands toward the rear of the vehicle.

FIG. 1B is a diagram illustrating a vehicle after the operation of the airbag device 100. The cushion 108 is formed as a three-dimensionally inflatable bag, and receives gas from the inflator 110 (see FIG. 2A) to expand and expand. The cushion 108 is formed by stacking and sewing or adhering a plurality of base fabrics constituting the surface thereof, or by spinning using OPW (One-Piece Woven).

The cushion 108 includes two parts, a main bag 112 and a center bag 114. The main bag 112 is a large-capacity portion that expands and expands in front of the passenger seat 104. The main bag 112 expands and expands so as to fill the space between the occupant of the passenger seat 104 and the instrument panel 102 and the windshield 116. This prevents the occupant from colliding with the instrument panel 102 and releasing the occupant from the vehicle.

The center bag 114 is a flat portion having a capacity smaller than that of the main bag 112, which expands and expands adjacent to the inside of the main bag 112. The center bag 114 expands and expands in front of the center console 118 when viewed from the occupant. The center bag 114 prevents the occupant from moving inside the vehicle, colliding with the center console 118, or the like in the event of an oblique collision, for example, when the vehicle collides in an oblique direction.

FIG. 2 is a diagram illustrating the cushion 108 at the time of expansion and deployment of FIG. 1B from each direction. FIG. 2A illustrates the cushion 108 of FIG. 1B as viewed from above the vehicle. The main bag 112 and the center bag 114 each have a substantially independent bag shape, and the upper portions of the main bag 112 and the center bag 114 are connected by a tether belt 122.

The tether belt 122 has a band shape and plays a role of supporting the posture of the center bag 114. The tether belt 122 is formed of, for example, the same type of base cloth as the cushion 108, and is connected to the center bag 114 and the main bag 112 by sewing, respectively.

A valley 124 is formed between the main bag 112 and the center bag 114. The valley 124 extends between the center bag 114 and the main bag 112 in the front-rear direction and the vertical direction of the vehicle. The valley 124 is used as a portion that restrains the occupant's head in particular. The tether belt 122 also has a function of maintaining the narrowness of the valley 124. The center bag 114 and the main bag 112 may be connected by an internal vent hole or the like in front of the vehicle in the valley 124.

FIG. 2B is a diagram illustrating the cushion 108 of FIG. 2A as viewed from the outside of the vehicle. As illustrated in FIG. 2 (b), in the center bag 114, the rear region 126 on the rear side of the vehicle projects to the rear of the vehicle (to the left in the middle of FIG. 2 (b)) from the main bag 112 and expands and expands. Therefore, the vehicle outer side surface portion 128 of the center bag 114 is exposed from the valley 124. The center bag 114 mainly restrains the temporal region of the occupant by the side surface portion 128 on the outer side of the vehicle.

FIG. 2C is a diagram illustrating the cushion 108 of FIG. 2A as viewed from the rear side of the vehicle. An inflator 110 is provided at the bottom of the main bag 112. The inflator 110 is a gas generator, which is housed inside the main bag 112 and fixed to the insole of the storage portion (see FIG. 1A). The inflator 110 operates in response to an operation signal transmitted from the vehicle side when an impact occurs, and supplies gas to the inside of the cushion 108.

The inflator 110 used in the present embodiment is a disc type (disk type), but a cylinder type (cylindrical type) can also be used. Currently popular inflators are filled with a gas generating agent and burned to generate gas, compressed gas is filled with gas to supply gas without generating heat, or combustion. There is a hybrid type that uses both gas and compressed gas. Any type of inflator 110 can be used.

A metal retainer 130 is also provided around the inflator 110. The retainer 130 is a member that rectifies the gas and has a vertical wall that surrounds the inflator 110. The retainer 130 has a plurality of stud bolts 132, and these stud bolts 132 fix the inflator 110 together with the inner bottom of the storage portion 106.

The process of restraining the occupant by the cushion 108 will be outlined with reference to FIG. The cushion 108 of the present embodiment can cope with an oblique collision with the vehicle, a so-called oblique collision. For example, in FIG. 2A, when an oblique collision occurs, the occupant's head moves, for example, diagonally forward inside the vehicle (diagonally above the middle left in FIG. 2A).

The cushion 108 catches the head of the occupant entering diagonally near the entrance of the valley 124 while contacting the center bag 114, or restrains the head of the occupant so as to enter the inside of the valley 124. At that time, the shoulders and chests of the occupants are restrained by the rear end side of the main bag 112 and the center bag 114.

Since the occupant's head comes into contact with the center bag 114 from the vicinity of the temporal region and is received by the vicinity of the valley 124, the occupant's head is restrained without rotating. As described above, the center bag 114 and the main bag 112 of the present embodiment make it possible to significantly reduce or cancel the rotation generated in the head. Usually, when the head rotates around the neck, the injury value of the occupant tends to be high. In the present embodiment, the angular velocity of rotation of the occupant's head can be reduced, and the movements of the occupant's head and shoulders can be aligned and restrained, so that the head injury value due to rotation can be suppressed.

The main bag 112 is in contact with the windshield 116 (see FIG. 1B) and the instrument panel 102 to expand and expand. Since the main bag 112 is supported by the windshield 116, the instrument panel 102, and the like, the occupant can be restrained in a stable posture even when the occupant enters.

(Storage form of airbag cushion)
The cushion 108 described above is housed in the storage section 106 of FIG. 1 (a) in a storage form 150 (see FIG. 7 (c) described later) that is folded and wound into small pieces. As illustrated in FIG. 2A, the cushion 108 of the present embodiment has different gas capacities between the main bag 112 on the outside of the vehicle and the center bag 114 on the inside of the vehicle, so that the cushion 108 sways in the vehicle width direction during expansion and deployment. Is a concern. Therefore, in the present embodiment, the cushion 108 is stored in a unique folding manner to suppress the cushion 108 from shaking in the vehicle width direction during expansion and deployment. Hereinafter, how to fold the cushion 108 will be described.

3 to 7 are views exemplifying the process of accommodating the airbag cushion 108 of FIG. 2A in order. FIG. 3A illustrates the cushion 108 of FIG. 2A from the outside of the vehicle. In the process of folding the cushion 108 into the storage form, first, the upper portion of the inflator 110 of the main bag 112 is folded toward the front of the vehicle. Subsequently, as illustrated in FIG. 3B, the main bag 112 is further reduced in size in the vertical direction of the vehicle.

In the present embodiment, when the main bag 112 is folded in the vertical direction of the vehicle from the state of FIG. 3A to the state of FIG. 3B, the side surface of the main bag 112 is folded in a bellows shape. 3 (c) is a view exemplifying the cushion 108 of FIG. 3 (b) from above the vehicle, and FIGS. 3 (d) to 3 (e) are followed by cross-sectional views of the cushion 108.

FIG. 3D is a sectional view taken along the line AA of the main bag 112 of FIG. 3C. As illustrated in FIG. 3D, the side surface of the cushion 108 on the outside of the vehicle is folded in a bellows shape by repeating mountain folds and valley folds in the vertical direction of the vehicle to form side pleats 134. In the side pleated region 136, a plurality of side pleats 134 are formed in the vertical direction of the vehicle.

A long pleated 138 is provided above the side pleated region 136. The long pleats 138 are mountain-folded portions, and when extended to the outside of the vehicle (right side in FIG. 3D), they are formed longer than the side pleats 134 in the side pleats region 136. The long pleats 138 are folded so as to cover the side pleated region 136 in a later step.

FIG. 3 (e) is a cross-sectional view taken along the line BB of the main bag 112 of FIG. 3 (c) near the center in the vehicle front-rear direction. Since the vicinity of the center of the main bag 112 is large in the vertical direction of the vehicle, a larger number of side pleats 134 are formed in the portion of FIG. 3 (e) than in the portion of FIG. 3 (d). FIG. 3 (f) is a sectional view taken along line CC of the main bag 112 of FIG. 3 (c) on the rear side of the vehicle. On the rear side of the main bag 112 of the vehicle, the number of side pleats 134 is smaller than that in FIG. 3 (e) due to the influence of the vertical dimensions of the vehicle.

FIG. 4A illustrates a state in which the center bag 114 of FIG. 3C is folded. The center bag 114 is folded so as to be compressed in the vehicle width direction. Subsequently, as illustrated in FIG. 4B, the center bag 114 is wound in a predetermined range from the rear side of the vehicle (winding portion 140). The rear end of the center bag 114 is aligned to the same extent as the main bag 112 by forming the winding portion 140.

FIG. 4C is a view in which the center bag 114 of FIG. 4B is folded in the vertical direction of the vehicle. The center bag 114 is folded flat by a crease extending in the front-rear direction of the vehicle. FIG. 4D is a cross-sectional view taken along the line DD of FIG. 4C. The center bag 114 is diffracted a plurality of times to reduce the size in the vertical direction of the vehicle.

FIG. 5A illustrates a state in which the long pleats 138 of FIG. 4C are bent downward in the vehicle. The size of the main bag 112 in the vehicle width direction is reduced by bending the long pleats 138. 5 (b) is a cross-sectional view taken along the line EE of FIG. 5 (a), and is a state in which the long pleats 138 of FIG. 3 (d) are bent. The long pleats 138 are bent downward in the vehicle, cover at least a part of the side pleated area 136, and reach below the side pleated area 136.

5 (c) is a cross-sectional view taken along the line FF of FIG. 5 (a), and is a state in which the long pleats 138 of FIG. 3 (e) are bent. Also in FIG. 5C, the long pleats 138 are bent toward the side pleated region 136 and reach below the side pleated region 136. 5 (d) is a cross-sectional view taken along the line GG of FIG. 5 (a), and is a state in which the long pleats 138 of FIG. 3 (f) are bent. Also in FIG. 5D, the long pleats 138 are bent until they reach below the side pleats region 136.

FIG. 6A illustrates a state in which the cushion 108 of FIG. 5A is folded from the rear side of the vehicle (the lower middle side of FIG. 6A). FIG. 6B is a view of the cushion 108 of FIG. 6A viewed from the outside of the vehicle. The cushion 108 is folded in a bellows shape from the rear side of the vehicle (left side in FIG. 6B).

FIG. 6 (c) illustrates a cushion 108 that is further folded from the state of FIG. 6 (b). The cushion 108 is folded to about the width of the inflator 110 and the retainer 130 in the front-rear direction. FIG. 6D is a view of the cushion 108 of FIG. 6C as viewed from the outside of the vehicle. The folded area 142 is stacked above the vehicle of the inflator 110. After that, the region 144 inside the vehicle of FIG. 6 (c) is further folded back to the outside of the vehicle as illustrated in FIG. 6 (e). FIG. 6 (f) is a view of FIG. 6 (e) as viewed from the outside of the vehicle. Region 144 also folds over the inflator 110 and region 142 above the vehicle.

FIG. 7A is a view in which the front end portion 146 of the main bag 112 of FIG. 6E is folded back toward the rear side of the vehicle. FIG. 7B is a view of the cushion 108 of FIG. 7A viewed from the outside of the vehicle. The front end portion 146 is folded back so as to wrap the areas 142 and 144.

FIG. 7 (c) illustrates a state in which the cushion 108 of FIG. 7 (a) is wrapped with a flap 148. The flap 148 is a wrapping cloth that can be broken by expanding and unfolding the cushion 108. By wrapping the cushion 108 with the flap 148, the folding, winding, and the like of the cushion 108 are maintained. FIG. 7 (d) is a view of the cushion 108 of FIG. 7 (c) viewed from the outside of the vehicle. The flap 148 is attached so as to be hooked on the stud bolt 132 of the retainer 130. By wrapping the cushion 108 with the flap 148, the storage form 150 of the cushion 108 is completed.

FIG. 8 is a diagram illustrating the unfolding behavior of the cushion 108 of the storage form 150 of FIG. 7 (c). FIG. 8A is the cushion 108 of the present embodiment, and FIG. 8B is the cushion 10 of the comparative example.

FIG. 8A illustrates the state of the cushion 108 of the storage form 150 described above when it is expanded and expanded. FIG. 5 As described with reference to each figure, in the storage form 150 of the cushion 108 of the present embodiment, the long pleats 138 are formed on the outer side of the main bag 112, and the long pleats 138 are formed in the side pleated region below the long pleats 138. It is bent so as to cover 136.

The cushion 10 of the comparative example illustrated in FIG. 8B will be described first. In FIG. 8B, the long pleats 138 illustrated in each of FIGS. 5 are not provided, and the cushion 10 is expanded and expanded to represent the expansion behavior of the cushion 10 from the storage configuration. The cushion 10 has the same configuration as the cushion 108 of the present embodiment except that it does not have long pleats 138 in the stored form. Therefore, the cushion 10 also has a main bag 112 having a large capacity on the outside of the vehicle and a center bag 114 having a small capacity on the inside of the vehicle.

The cushion 10 starts expanding from the storage portion 106 toward the upper side of the vehicle, follows the windshield 116, and then expands toward the lower side of the vehicle. At that time, since the capacities of the main bag 112 on the outside of the vehicle and the center bag 114 on the inside of the vehicle are different, the cushion 10 may sway in the vehicle width direction. In FIG. 8B, the expansion and deployment of the main bag 112 on the outside of the vehicle is preferentially generated, and the cushion 10 is further repelled by the windshield 116 and the like, so that the posture of the cushion 10 is tilted.

In the cushion 108 of the present embodiment illustrated in FIG. 8A, the long pleats 138 illustrated in each figure of FIG. 5 are bent so that the outside of the cushion 108 is inside the vehicle when gas is supplied. It takes some resistance than. Therefore, the timing of expansion and deployment of the main bag 112 on the outer side of the cushion 108 is slightly later than that on the center bag 114 on the inner side of the vehicle. As a result, the unfolding behavior of the center bag 114 and the unfolding behavior of the main bag 112 are balanced, the shaking in the vehicle width direction is offset, and the bag expands in a normal posture.

As described above, in the present embodiment, it is possible to expand and deploy the cushion 108 from the inside of the vehicle first to adjust the deployment behavior of the cushion 108. In particular, the cushion 108 (passenger airbag) for the passenger seat has a relatively large capacity as compared with other airbag cushions for the driver's seat, and the gas flow is easily reflected in the deployment behavior. In particular, in the present embodiment, since the main bag 112 having a large capacity and the center bag 114 having a small capacity are provided side by side in the vehicle width direction, shaking is likely to occur. With such a cushion 108 for the passenger seat, the long flap 148 can be used more effectively.

(How to store the airbag cushion)
The process of folding the cushion 108 described with reference to FIGS. 3 to 7 into the storage form 150 will be roughly summarized as a method of storing the cushion 108. First, as a step of creating a side pleated area, when the cushion 108 illustrated in FIG. 3B is reduced in the vertical direction of the vehicle, mountain folds and valley folds are repeated on the outer side surface of the vehicle in the vertical direction of the vehicle to create the side pleated area. 136 is provided.

In FIG. 3B, a long pleated production step is also performed. In the long pleats making step, long pleats 138 that are mountain-folded and longer than the side pleats area 136 when extended to the outside of the vehicle are provided on the side surface of the cushion 108 on the outside of the vehicle. In the present embodiment, the long pleats 138 are provided above the vehicle from the side pleats region 136.

FIG. 5 In each figure, a coating process is performed. In the covering step, the long pleats 138 are bent downward in the vehicle to cover at least a part of the side pleated region 136.

In the storage step, the cushion 108 in the storage form 150 as illustrated in FIG. 7C is stored in the storage portion 106 in FIG. 1A. As a result, as illustrated in FIG. 8A, it is possible to add resistance to the outside of the vehicle when the cushion 108 is expanded and deployed, and to adjust the deployment behavior of the cushion 108 in the vehicle width direction.

The side pleated region creating step and the long pleated creating step do not necessarily have to be performed in this order, and the long pleated forming step can be performed first. Further, in the long pleats making step, it is possible to provide the long pleats 138 (see FIG. 3D) below the side pleats region 136, and the long pleats 138 are provided in the middle of the side pleats region 136, that is, long. It is also possible to provide the side pleats 134 on both the upper and lower sides of the pleats 138.

The storage method of the airbag device 100 and the cushion 108 described above adjusts the deployment behavior of the cushion 108 by a simple configuration using long pleats 138 (see FIG. 3D), so that the shape of the cushion 108 and the like are adjusted. It is advantageous in terms of labor and cost compared to the case of changing.

Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described above are preferred examples of the present invention, and other embodiments may also be implemented by various methods. Can be carried out. Unless otherwise specified in the specification of the present application, the present invention is not limited to the shape, size, configuration arrangement, etc. of the detailed parts shown in the accompanying drawings. In addition, the expressions and terms used in the specification of the present application are for the purpose of explanation, and are not limited thereto unless otherwise specified.

Therefore, it is clear that a person skilled in the art can come up with various modifications or modifications within the scope of the claims, which naturally belong to the technical scope of the present invention. It is understood as a thing.

INDUSTRIAL APPLICABILITY The present invention can be used for an airbag device provided with an airbag cushion stored in a storage unit and a method for storing an airbag cushion for storing the airbag cushion in the storage unit.

10 ... Comparative example cushion, 100 ... Airbag device, 102 ... Instrument panel, 104 ... Passenger seat, 106 ... Storage unit, 107 ... Lid part, 108 ... Cushion, 110 ... Inflator, 112 ... Main bag, 114 ... Center Bag, 116 ... Windshield, 118 ... Center console, 122 ... Tether belt, 124 ... Valley, 126 ... Center bag rear area, 128 ... Center bag side, 130 ... Retainer, 132 ... Stud bolt, 134 ... Side pleats, 136 ... Side pleated area, 138 ... Long pleats, 140 ... Winding part, 142 ... Cushion car outside folded area 144 ... Cushion car inside folded area 146 ... Main bag front end, 148 ... Flap , 150 ... Storage form

Claims (6)

A predetermined storage compartment provided in front of the front seat of the vehicle,
An airbag cushion that is formed as a three-dimensionally inflatable bag and is stored in the storage unit in a wound or folded storage form.
A side pleated area provided on the outer side surface of the airbag cushion in which mountain folds and valley folds are repeated in the vertical direction of the vehicle.
Long pleats that are provided on the outer side surface of the airbag cushion and are mountain-folded and longer than the side pleated area when extended to the outside of the vehicle.
With
An airbag device characterized in that the long pleats are bent to cover at least a part of the side pleated region. The airbag device according to claim 1, wherein the long pleats are provided above the side pleats region of the vehicle and are bent downward to cover at least a part of the side pleats region. The airbag cushion
A main bag that expands in front of the front seats,
The airbag device according to claim 1 or 2, further comprising a center bag having a capacity smaller than that of the main bag that expands and expands inside the main bag. The airbag device according to any one of claims 1 to 3, wherein the airbag cushion is for a passenger seat. This is a method of storing an airbag cushion in which an airbag cushion formed as a three-dimensionally inflatable bag is stored in a predetermined storage portion provided in front of the front seat of the vehicle.
A step of creating a side pleated area in which a mountain fold and a valley fold are repeated in the vertical direction of the vehicle to provide a side pleated area on the outer side surface of the airbag cushion.
A long pleats making process in which long pleats that are mountain-folded and longer than the side pleats region when extended to the outside of the vehicle are provided on the outer side surface of the airbag cushion.
A coating step of bending the long pleats and covering at least a part of the side pleats with the long pleats.
A storage method for an airbag cushion, which comprises a storage process in which the airbag cushion is stored in the storage portion in a storage form. In the long pleats making step, the long pleats are provided above the vehicle from the side pleats region.
The method for storing an airbag cushion according to claim 5, wherein in the covering step, the long pleats are bent downward in the vehicle to cover at least a part of the side pleats region.

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