Airbag device

Abstract

To provide an air bag device and an air bag folding method capable of achieving high development performance of an air bag.SOLUTION: An air bag device 1 comprises an air bag 2 formed into a bag shape and expanded and developed from a folded state by means of a gas introduced inside. The air bag device 1 comprises a retainer 12 having a rising wall 19 and positioned inside the air bag 2 to hold the folded air bag 2 with a case body 31. The air bag device 1 comprises a covering member 21 that covers the folded air bag 2 partially along the rising wall 19. The air bag device 1 comprises a fixing unit 25 that has a function of a suppression unit for suppressing entry of a prescribed part of the air bag 2 between the rising wall 19 of the retainer 12 and the covering member 21 in a state where the air bag 2 is covered with the covering member 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an airbag device in which a folded airbag is covered with a covering member. Place Regarding. [Background technology]

[0002] BACKGROUND ART Conventionally, in airbag devices provided in automobiles, there is known a device in which a bag-shaped airbag is covered with a separate covering member such as cloth in order to maintain the folded shape of the bag-shaped airbag in a stored state (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-10430 A (pages 9-10, Figures 12-13) Summary of the Invention [Problem to be solved by the invention]

[0004] When using a covering member to maintain the shape of a folded airbag, it is necessary to avoid a situation where a slight deformation of the airbag causes a predetermined part of the airbag to assume an unexpected state, hindering smooth deployment, etc. Therefore, it is desirable to avoid imposing restrictions on the folding method of the airbag, reducing the workability of the folding process, and reducing the degree of freedom in design.

[0005] The present invention has been made in view of the above points, and provides an airbag installation device that can obtain good airbag deployment performance. Place The purpose is to provide. [Means for solving the problem]

[0006] The airbag device according to claim 1 includes an airbag formed in a bag shape and inflated and deployed by gas introduced into the airbag when it is folded; a holding member having a standing wall and positioned inside the airbag to hold the airbag in a folded state between the holding member and a storage member; a covering member that covers the airbag in a folded state with a part of the standing wall aligned; and a cover member for covering the airbag when it is covered with the covering member. tip a suppressing portion that suppresses the holding member from entering between the standing wall and the covering member. The suppression portion is at least a part of a fixing portion that fixes the covering member and the airbag, and the covering member is fixed to the outside of the airbag by the fixing portion and is positioned outside the airbag in a folded state. It is something.

[0007] request request 2 The airbag device described in claim 1 In the described airbag device, the suppression portion is located near the top of the standing wall of the retaining member.

[0008] The airbag device of claim 3 is the airbag device of claim 1 or 2, in which the covering member has a first covering portion and a second covering portion that extend in directions that intersect with each other, and covers the entire airbag in a folded state.

[0009] The airbag device according to a fourth aspect of the present invention is the airbag device according to the third aspect, wherein the covering member has a planned breaking line in the second covering portion. [Effects of the Invention]

[0010] Original wish According to the airbag device, the folded shape of the airbag is maintained by the covering member, By utilizing the fixing portion between the covering member and the airbag without using any additional member, a predetermined folded portion of the airbag is prevented from getting between the standing wall of the holding member and the covering member, Airbag tip This can suppress variations in the deployment behavior of the airbag caused by interference with the upright wall side of the retaining member or the covering member, thereby achieving good deployment performance of the airbag. 。 [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view showing an airbag device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional view showing an airbag of the airbag device. [Figure 3] FIG. [Figure 4]FIG. 2 is a perspective view showing an airbag of the airbag device in a folded state. [Figure 5] FIG. 3 is a perspective view showing a state in which the airbag of the airbag device in a folded state is stored in a storage member. [Figure 6] 3A is a plan view schematically showing one step of a folding method for the airbag, and FIG. 3B is a cross-sectional view of FIG. 3A. [Figure 7] 7(a) is a plan view schematically showing a step subsequent to FIG. 6 of the folding method of the airbag, and FIG. 7(b) is a cross-sectional view of FIG. [Figure 8] 8(a) is a plan view schematically showing a step subsequent to FIG. 7 in the method of folding the airbag, and FIG. 8(b) is a cross-sectional view of FIG. [Figure 9] 9(a) is a plan view schematically showing a step subsequent to FIG. 8 of the method for folding the airbag, and FIG. 9(b) is a cross-sectional view of FIG. [Figure 10] 10(a) is a plan view schematically showing a step subsequent to FIG. 9 in the method of folding the airbag, and (b) is a cross-sectional view of (a). [Figure 11] 11(a) is a plan view schematically showing a step subsequent to FIG. 10 in the method of folding the airbag, and FIG. 11(b) is a cross-sectional view of FIG. [Figure 12] 12(a) is a plan view schematically showing a step subsequent to FIG. 11 in the method of folding the airbag, and FIG. 12(b) is a cross-sectional view of FIG. [Figure 13] 13(a) is a plan view schematically showing a step subsequent to FIG. 12 in the method of folding the airbag, and FIG. 13(b) is a cross-sectional view of FIG. [Figure 14] 14(a) is a plan view schematically showing a step subsequent to FIG. 13 in the method of folding the airbag, and FIG. 14(b) is a cross-sectional view of FIG. [Figure 15] 15 is a plan view schematically showing a step subsequent to FIG. 14 in the method of folding the airbag. FIG. [Figure 16] 16(a) is a plan view schematically showing a step subsequent to FIG. 15 in the method of folding the airbag, and FIG. 16(b) is a cross-sectional view of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] 1 to 5, reference numeral 1 denotes an airbag device. In this embodiment, the airbag device 1 is described as an airbag device for protecting an occupant, who is a protected object seated in the passenger seat of an automobile as a vehicle, that is, an airbag device 1 for a passenger seat occupant. Note that, hereinafter, the front-rear direction, both side directions, and up-down direction will be described based on the viewpoint of an occupant seated in an automobile seat with the airbag device 1 attached to an installation portion.

[0014] The airbag device 1, which may also be referred to as an airbag module, includes a bag-shaped airbag 2. As shown in FIGS. 2 and 3 , the airbag 2 is formed into a bag shape using a single or multiple base fabrics. In this embodiment, the airbag 2 is formed by joining the peripheral edges of circular base fabrics 3 and 4, as viewed from the front, with a joining portion 5 such as stitching. For example, the base fabric 3 is an occupant-side base fabric that is located on the occupant side and forms a restraint surface, and the base fabric 4 is an anti-occupant-side base fabric that is located behind the occupant. The base fabric 4 has an inlet 6 through which gas is introduced. The inlet 6 is formed, for example, in a circular shape and is located in the center of the base fabric 4. Through holes are formed around the inlet 6. For example, four through holes are formed at positions equiangular or approximately equiangular with respect to each other in the circumferential direction. In this embodiment, a plurality of reinforcing patches 8 are joined to the base fabric 4 on the inside of the airbag 2 at the peripheral edge of the inlet 6 to reinforce the peripheral edge of the inlet 6. The reinforcing patch 8 also has through holes formed therein. Additionally, a flow regulator that regulates the flow of gas or a control body such as a tether that controls the deployed shape of the airbag 2 may be disposed inside the airbag 2. In this embodiment, the base fabric 4 is formed with vent holes 9 for discharging excess gas inside the airbag 2 when an occupant is restrained and for setting the internal pressure appropriately.

[0015] As shown in FIG. 1 , an inflator 11 that supplies gas to the airbag 2 is attached to the inlet 6 of the airbag 2 via a retainer 12, which is a holding member. The inflator 11 has a main body 13, for example, in the shape of a disk. A flange 14, which is the attachment portion, protrudes from the outside of the main body 13, and a through hole is formed in the flange 14. A gas ejection port is formed in the main body 13. An igniter and a chemical agent are housed inside the main body 13. A control device is electrically connected to the main body 13. In response to an electrical signal from the control device, the igniter combusts the chemical agent, and the inflator 11 rapidly supplies inflation gas from the gas ejection port. The inflator 11 may have various shapes, and the main body 13 may be formed in a long cylindrical shape, for example.

[0016] The retainer 12 is formed into a frame shape from metal or the like. The retainer 12 is inserted into the airbag 2. The retainer 12 has a bottom surface 16. The bottom surface 16 is overlaid on the base fabric 4 side of the airbag 2. The bottom surface 16 is formed, for example, in a rectangular shape. The bottom surface 16 has an opening 17 formed therein, into which the main body 13 of the inflator 11 is inserted. The opening 17 communicates with the inlet 6 and is positioned in alignment with the inlet 6. Furthermore, mounting bolts (stud bolts) 18 protrude from the bottom surface 16 around the opening 17. The mounting bolts 18 are inserted into through holes in the base fabric 4 of the airbag 2 and through holes in the flange portion 14 of the inflator 11. Furthermore, a standing wall 19 is formed on the outer edge of the bottom surface 16, standing upright. The standing wall 19 is formed continuous to the entire outer edge of the bottom surface 16. The standing wall 19 is set to, for example, a constant or approximately constant height. The shape and size of the retainer 12 roughly determine the outer shape and size of the airbag 2 in a folded state.

[0017] A covering member 21 is attached to the airbag 2 to cover the airbag 2 and maintain the airbag 2 in a folded state. The covering member 21 is also called a packing sheet, packing cloth, wrapping cloth, or folding prevention body, and is formed from, for example, synthetic paper, paper, cloth, nonwoven fabric, or a resin sheet. The covering member 21 has a function of controlling the deployment behavior of the airbag 2. The covering member 21 is overlaid on the base fabric 4 of the airbag 2. As shown in FIG. 3 , in this embodiment, the covering member 21 is formed into a substantially T-shape or a substantially cross shape by a first covering portion 22 and a second covering portion 23 extending in a direction intersecting (orthogonal to) the first covering portion 22. In the illustrated example, the first covering portion 22 is formed in a rectangular shape extending in the vehicle width direction, and the second covering portion 23 is formed in a rectangular shape extending in the up-down direction.

[0018] The covering member 21 has an insertion opening 24 formed at the position where the first covering portion 22 and the second covering portion 23 intersect, and the peripheral portion of the insertion opening 24 is fixed integrally to the base fabric 4 outside the airbag 2 by a fixing portion 25, so that the insertion opening 24 is aligned and communicates with the inlet 6 of the airbag 2.

[0019] The insertion opening 24 is formed in substantially the same shape as the inlet 6, for example, in a circular shape. The main body 13 of the inflator 11 is inserted into the insertion opening 24. Around the insertion opening 24, through holes 27 are formed in the covering member 21, through which the mounting bolts 18 of the retainer 12 are inserted.

[0020] The fixing portion 25 shown in FIGS. 1 to 4 is a joint formed by sewing or the like. The fixing portion 25 surrounds the insertion opening 24 (inlet 6) and is formed along the outer shape of the bottom surface portion 16 of the retainer 12. In this embodiment, the fixing portion 25 is formed in a rectangular frame shape. Furthermore, the fixing portion 25 is formed so that one side extends further than the other side when viewed from the insertion opening 24 (inlet 6). In the example shown in the figures, the fixing portion 25 is formed so that it extends upward a predetermined distance. The extension length of the fixing portion 25 is set according to the height of the standing wall 19 of the retainer 12. In the example shown in FIG. 3, the fixing portion 25 is formed so that the upper dimension L2 is longer by 9 mm than the lower dimension L1.

[0021] Furthermore, the covering member 21 has a fracture line 28, which is a weak slit, formed across the vehicle width direction. The fracture line 28 is formed in the second covering portion 23. Furthermore, the covering member 21 has holes 29 for fixing the covering member 21, which covers the airbag 2, to the retainer 12 (shown in FIG. 1). Two holes 29 are formed, for example, at the tip of the second covering portion 23. The mounting bolts 18 of the retainer 12 shown in FIG. 1 are inserted into the holes 29 and hooked onto the mounting bolts 18.

[0022] 1 and 5, the airbag 2 in a folded state held by the covering member 21 is attached to a case body 31, which is a storage member. The case body 31 is formed in a generally box-like shape integrally having a bottom 32 and side wall portions 33 rising from the outer edge of the bottom 32, with the front side forming an opening and the inside forming an airbag storage portion that stores the airbag 2. The bottom 32 is formed with a mounting opening 34 through which the main body 13 of the inflator 11 is inserted, and around the mounting opening 34 are formed through-holes through which the mounting bolts 18 of the retainer 12 are inserted. Fastening members such as nuts are fastened to the mounting bolts 18 inserted through the through-holes.

[0023] The side wall portion 33 is formed with a locking portion 36 for locking the case body 31 to the cover body. In this embodiment, the locking portion 36 is formed in a hook shape. The cover body normally covers the protrusion opening of the case body 31. The cover body is made of, for example, a synthetic resin. The cover body is formed integrally with or separately from the decorative surface of the installation portion. In the case of an airbag device 1 for a passenger seat, the cover body is formed integrally with or separately from the instrument panel portion or the like. The cover body is formed with a predetermined shape tear line that is thinner than other portions and breaks easily.

[0024] Next, a method for folding the airbag 2 will be described.

[0025] First, as shown in Figures 6(a) and 6(b), the airbag 2 with the retainer 12 disposed therein is flattened together with the covering member 21 so that the base fabrics 3 and 4 overlap each other. At this time, the side of the base fabric 3 is set to the front side.

[0026] Next, the airbag 2 is folded in a predetermined first direction, which is the left-right direction in this embodiment, as shown in FIGS.

[0027] That is, as shown in Figures 7(a) and 7(b), one side of the airbag 2, for example the left side, is folded back to the other side of the covering member 21, for example the right side, and as shown in Figures 8(a) and 8(b), the tip portion of one side of the folded back airbag 2 is folded back so as to be rolled up, for example, into a roll using a flat, longitudinal jig 41 of a predetermined width such as a saber, and as shown in Figures 9(a) and 9(b), a first folded portion (first roll-folded portion) 43 is formed which is folded up to the base end to a width approximately half the width of the retainer 12 and the second covering portion 23 of the covering member 21.

[0028] The same process is repeated on the other side of the airbag 2, and a second folded portion (second roll-folded portion) 44 is formed adjacent to the first folded portion 43 by folding the retainer 12 and the second covering portion 23 of the covering member 21 to a width approximately half the width of the second covering portion 23, as shown in Figures 10(a) and 10(b).

[0029] Furthermore, the airbag 2 is folded in a second direction, which is vertical in this embodiment, intersecting or perpendicular to the predetermined first direction as shown in FIGS.

[0030] 11(a) and 11(b), the portion of the covering member 21 that protrudes from the first folded portion 43 and the second folded portion 44 in a front view, which is the upper portion of the second covering portion 23 in this embodiment, is raised in a mountain-like or tuck-like manner near the top of the standing wall 19 of the retainer 12, or in the illustrated example, to a height higher than the top, to form a lifting portion 45 that is a restricting portion, and the lifting portion 45 is brought close to and along the standing wall 19 of the retainer 12. In this state, the portion of the fixing portion 25 that fixes the covering member 21 and the airbag 2, located above the retainer 12, is longer than the portion located below the retainer 12 by a predetermined dimension corresponding to the dimension of the standing wall 19 of the retainer 12, and therefore the fixing portion 25 is located at the tip of the lifting portion 45 that is close to the top of the standing wall 19.

[0031] Then, one end, for example, the upper side, of the first folded portion 43 and the second folded portion 44 of the airbag 2 is folded back toward the other end, for example, the lower side, and as shown in FIGS. 12( a) and 12(b), the tip ends of the folded back first folded portion 43 and second folded portion 44 are folded back, for example, into a roll using a flat, longitudinal jig 46 of a predetermined width, such as a saber, to form a first folded back portion (first overlapping portion) 47, which is an overlapping portion folded up to the base end to the vertical width of the retainer 12, as shown in FIGS. 13( a) and 13(b). In this state, the first folded back portion 47 is located in front of the retainer 12. The tip end of the first folded back portion 47 is located close to the fixing portion 25 located at the tip end of the lifting portion 45, and is located outward from the lifting portion 45, i.e., separated from the standing wall 19 of the retainer 12 via the lifting portion 45. That is, the tip end of the first folded portion 47 is blocked by the lifting portion 45 so as not to get between the covering member 21 (second covering portion 23) and the standing wall 19 of the retainer 12.

[0032] 14(a) and 14(b), the distal ends of the lower first folded portion 43 and second folded portion 44 are folded back, for example, into a roll, using a flat, longitudinal jig 48 of a predetermined width, such as a saber, to form a second folded portion (second overlapping portion) 49, which is an overlapping portion that is overlapped on the first folded portion 47, as shown in FIGS. 15, 16(a) and 16(b). That is, the distal end of the second folded portion 49 is located close to the fixing portion 25 located at the distal end of the lifting portion 45, and is located outside the lifting portion 45, i.e., away from the standing wall 19 of the retainer 12 via the lifting portion 45. That is, the distal end of the second folded portion 49 is blocked by the lifting portion 45 so as not to get between the covering member 21 (second covering portion 23) and the standing wall 19 of the retainer 12.

[0033] Then, the folded airbag 2 is covered with the covering member 21.

[0034] First, both sides of the first covering portion 22 of the covering member 21 are folded back and overlapped on the second folded-back portion 49, and then the second covering portion 23 of the covering member 21 is pulled and folded back to cover the airbag 2 together with the first covering portion 22 while releasing the pull-up portion 45. At this time, because the tip ends of the first folded-back portion 47 and the second folded-back portion 49 are close to the fixing portion 25 located at the tip end of the pull-up portion 45, when the second covering portion 23 of the covering member 21 is folded back, the fixing portion 25 is pressed against the tip ends of the first folded-back portion 47 and the second folded-back portion 49 to push them up, thereby restricting their positions to an upper position relative to the standing wall 19 of the retainer 12, that is, to a position where they do not get between the standing wall 19 of the retainer 12 and the covering member 21 (second covering portion 23), and the second covering portion 23 of the covering member 21 covers the first folded-back portion 47 and the second folded-back portion 49 while maintaining the folded shape of the first folded-back portion 47 and the second folded-back portion 49. That is, at least a part of the fixing portion 25 located in the lifting portion 45 functions as a suppressing portion that suppresses a predetermined folded portion of the airbag 2 from getting between the upright wall 19 of the retainer 12 and the covering member 21. Then, by hooking the hole portion 29 shown in Figures 16(a) and 16(b) onto the mounting bolt 18 of the retainer 12 shown in Figure 1 etc., the airbag 2 is covered by the covering member 21 while maintaining its folded shape. In this state, as shown in Figure 4, a part of the covering member 21 is aligned with the upright wall 19 of the retainer 12 and the planned breaking line 28 is located on the front side of the airbag 2.

[0035] 1 and 5, the main body 13 of the inflator 11 is inserted through the mounting opening 34 of the case body 31, the insertion opening 24 of the covering member 21, and the opening 17 of the retainer 12, and the mounting bolts 18 of the retainer 12 are further inserted into the through holes of the inflator 11 and fastened with fastening members, whereby the folded airbag 2 is stored in the airbag storage section of the case body 31 together with the retainer 12 and the covering member 21, as shown in FIG. 1. In this state, the peripheral edge of the inlet 6 of the airbag 2 and the peripheral edge of the insertion opening 24 of the covering member 21 are sandwiched and held between the retainer 12 and the bottom 32 of the case body 31. Thereafter, the case body 31 is engaged with the engaging portion 36 to fasten the airbag device 1 to an installation section on the vehicle body side.

[0036] Although the first folding portion 43, the second folding portion 44, the first fold portion 47, and the second fold portion 49 are each roll-folded, they are not limited to this and may be folded in any desired shape depending on the desired unfolding behavior, etc.

[0037] When the sensor of the airbag device 1 detects an impact caused by a car collision or the like, the control device outputs a control signal based on the detection signal from the sensor to activate the inflator 11. Gas injected from the inflator 11 flows into the airbag 2 stored in a folded state in the airbag storage section through the inlet 6, causing the airbag 2 to inflate and deploy, breaking the tear line of the cover body and protruding from the protrusion opening, and deploying toward the occupant.

[0038] Thus, according to one embodiment, the fixing portion 25 is formed to have the function of a suppression portion that suppresses a predetermined folded portion of the airbag 2 from getting between the vertical wall 19 of the retainer 12 and the covering member 21 when the airbag 2 is covered with the covering member 21. This allows the folded shape of the airbag 2 to be maintained by the covering member 21, and suppresses variations in the deployment behavior of the airbag 2 caused by interference of a predetermined portion of the airbag 2 with the vertical wall 19 side of the retainer 12 or the covering member 21, thereby achieving good deployment performance of the airbag 2.

[0039] Furthermore, since the specified portion of the airbag 2 is the tip of the folded airbag 2, the position of the tip of the airbag 2, which may affect the deployment behavior of the airbag 2, can be regulated by the fixing portion 25, and the desired deployment performance can be easily obtained.

[0040] By using at least a part of the fixing portion 25 that fixes the covering member 21 and the airbag 2 as a suppression portion, it is possible to more reliably prevent a predetermined folded portion of the airbag 2 from getting between the standing wall 19 of the retainer 12 and the covering member 21 with a simple configuration, without using a separate member, by utilizing the fixing portion 25 between the covering member 21 and the airbag 2. Furthermore, because the fixing portion 25 is formed by sewing or the like, its shape and position can be easily set, and adjustment according to the required deployment performance of the airbag 2 can be easily made.

[0041] Furthermore, when folding the airbag 2, the lifting portion 45 including the fixing portion 25 is formed in advance using a part of the covering member 21 (second covering portion 23) along the vertical wall 19 of the retainer 12, and then the airbag 2 is folded to form the first folded portion 47 and the second folded portion 49. This utilizes the fixing portion 25 between the covering member 21 and the airbag 2, and the lifting portion 45 prevents the tip ends of the first folded portion 47 and the second folded portion 49, which are part of the airbag 2, from getting between the vertical wall 19 of the retainer 12 and the covering member 21 during folding. From this state, the covering member 21 is pulled to press the fixing portion 25 against the first folded portion 47 and the second folded portion 49, preventing the first folded portion 47 and the second folded portion 49 from getting between the vertical wall 19 of the retainer 12 and the covering member 21, while maintaining the folded shape of the airbag 2 with the covering member 21, making it possible to easily hold the airbag 2 with a simple operation. Therefore, there is no need to carefully cover the airbag 2 with the covering member 21 so that the predetermined folded portion of the airbag 2 does not get between the standing wall 19 of the retainer 12 and the covering member 21, and there is no need to correct the deformation or displacement of the airbag 2 after covering, so the workability of folding the airbag 2 is good.

[0042] Furthermore, since the position of a predetermined portion of the airbag 2 is regulated by the fixing portion 25, the airbag 2 is unlikely to lose its shape even when the folded airbag 2 is covered with the covering member 21 under strong tension, so that the airbag 2 can be regulated compactly to fit within a predetermined size, which also contributes to miniaturization of the airbag device 1.

[0043] Since the fixing portion 25 is located near the top of the standing wall 19 of the retainer 12, it is possible to more reliably prevent a predetermined folded portion of the airbag 2 from getting between the standing wall 19 of the retainer 12 and the covering member 21 when the airbag 2 is covered by the covering member 21.

[0044] In the above embodiment, the specified portion of the airbag 2 restricted by the fixing portion 25 is not limited to the tip portion of the airbag 2 (the first folded portion 47 and the second folded portion 49), but may be any portion depending on the desired deployment performance of the airbag 2.

[0045] Furthermore, the fixing portion 25 is formed by sewing or the like, but is not limited to this and may be formed by adhesion, welding or the like, or the airbag 2 and the covering member 21 may be manufactured integrally by a special folding method such as OPW (One Piece Woven), and the connecting portion may be used as the fixing portion 25.

[0046] Furthermore, the fixing of the covering member 21 to the airbag 2 by the fixing portion 25 may be partial, as long as it is possible to regulate the positions of predetermined portions of the airbag 2, for example, the tip ends of the first folded portion 47 and the second folded portion 49.

[0047] In addition, instead of the fixing portion 25, a fixing member such as a band having a width approximately equal to the height of the vertical wall 19 of the retainer 12 may be used, and by wrapping the airbag 2 together with the covering member 21 from the outside, a suppression portion may be formed that suppresses a predetermined portion of the airbag 2 from getting between the vertical wall 19 of the retainer 12 and the covering member 21.

[0048] The airbag device 1 is not limited to an airbag device for a passenger seat, but may be an airbag device for a driver's seat where it is installed on a steering wheel as an installation part, or may be an airbag device installed in another installation part. [Industrial Applicability]

[0049] The present invention can be applied to an airbag device for a passenger seat or a driver seat of an automobile, for example. [Explanation of symbols]

[0050] 1 Airbag device 2 airbags 12 Retainer as a holding member 19 Standing Wall 21 Covering material 22 First covering part 23 Second covering part 25 Fixing part with suppression function 28 Planned break line 31 Case body as a storage member 45. Raising section, which is the regulatory section

Claims

1. an airbag formed in a bag shape and inflated and deployed from a folded state by gas introduced therein; a holding member having a standing wall and positioned inside the airbag to sandwich the airbag in a folded state between itself and a storage member; a covering member that covers the airbag in a folded state with a portion of the covering member extending along the standing wall; a suppression portion that suppresses a tip portion of the airbag from entering between the standing wall of the holding member and the covering member when the airbag is covered with the covering member, the suppression portion is at least a part of a fixing portion that fixes the covering member and the airbag, The covering member is fixed to the outside of the airbag by the fixing portion and is positioned outside the airbag in a folded state. An airbag device characterized by:

2. The suppressing portion is located near the top of the standing wall of the holding member.

2. The airbag device according to claim 1.

3. The covering member has a first covering portion and a second covering portion extending in directions intersecting each other, and covers the entire airbag in a folded state.

3. The airbag device according to claim 1 or 2.

4. The covering member has a planned break line in the second covering portion.

4. The airbag device according to claim 3.

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