Air bag

Abstract

To provide an air bag capable of improving assembling property.SOLUTION: An air bag 1 which includes an air bag body 3 arranged in a state of being folded in a vehicle member of a vehicle, and inflating by inflow of gas so as to protect an occupant is such that the air bag body 3 is disposed with a fitting part 15 in which a fixing member to be fixed to the vehicle member is arranged; a fitting hole 19 into which the fixing member is inserted is disposed in the fitting part 15; the fitting hole 19 has a pair of ends 23, 23 separately disposed on one straight line L, and an opening 25 formed over the pair of ends 23, 23; and at least a part thereof is arranged in a position different from the position on the straight line L in a state that the opening 25 is closed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an airbag. [Background technology]

[0002] Conventionally, airbags have been known that include an airbag main body that is arranged in a folded state on a vehicle member of a vehicle and inflates with an inflow of gas to protect a vehicle occupant (see Patent Document 1). This airbag is arranged on a vehicle member located on the side of an upper portion of the vehicle interior so as to be positioned to the side of the occupant's head. This type of airbag is a so-called curtain airbag, in which the airbag main body inflates and deploys from above to below the vehicle to restrain and protect the occupant's head and other parts when the vehicle suffers, for example, a side collision or rollover. The airbag main body is provided with an attachment portion on which a fixing member that is fixed to the vehicle member is disposed. The airbag main body can be held in place on the vehicle member by fixing the fixing member arranged on the attachment portion to the vehicle member. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-43197 Summary of the Invention [Problem to be solved by the invention]

[0004] In an airbag such as that disclosed in Patent Document 1, the mounting portion is provided with a mounting hole through which a fixing member is inserted. The mounting hole has a pair of ends spaced apart on a straight line and an opening formed across the pair of ends. The opening is formed linearly so that it overlaps the straight line when closed. The mounting hole is opened and the fixing member is inserted into the opening, thereby positioning the fixing member on the fixing portion. However, with an opening formed linearly, the opening is narrow when opened, making it difficult to insert the fixing member into the opening, resulting in reduced assembly ease.

[0005] The present invention has been made in view of the problems inherent in the prior art, and an object of the present invention is to provide an airbag that can be easily assembled. [Means for solving the problem]

[0006] The airbag of this embodiment comprises an airbag body that is placed in a folded state on a vehicle component of a vehicle and inflates with the inflow of gas to protect the vehicle occupants, the airbag body is provided with an attachment portion in which a fixing member that is fixed to the vehicle component is placed, the attachment portion is provided with an attachment hole through which the fixing member is inserted, the attachment hole has a pair of ends that are spaced apart in a straight line and an opening formed across the pair of ends, and when the opening is closed, at least a portion of the opening is positioned in a position different from the straight line. [Effects of the Invention]

[0007] According to the present invention, it is possible to provide an airbag that can be easily assembled. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a partially cross-sectional front view of an airbag according to an embodiment of the present invention, showing an airbag body deployed; [Figure 2] FIG. 2 is an enlarged view of a mounting portion of the airbag according to the embodiment. [Figure 3] FIG. 2 is an enlarged view of the airbag according to the embodiment when the opening is open. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV of FIG. [Figure 5] FIG. 10 is an enlarged view showing another example of the mounting portion of the airbag according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0009] The airbag according to this embodiment will be described in detail below with reference to the drawings. Note that the dimensional proportions in the drawings are exaggerated for the sake of explanation and may differ from the actual proportions.

[0010] 1, the airbag 1 according to this embodiment is a so-called curtain airbag that is disposed in a vehicle member (not shown) that is arranged above a window located on one side of the vehicle interior. The airbag 1 has an airbag body 3 stored in a folded state in the vehicle member. When the vehicle experiences a side collision or rollover, for example, gas flows into the airbag body 3, which inflates and deploys to protect the occupant from the impact of the vehicle collision or rollover.

[0011] As shown in Figures 1, 2, and 4, the airbag body 3 includes, for example, a vehicle-side base fabric arranged on the exterior side (window side) of the vehicle cabin when inflated and deployed, and an occupant-side base fabric arranged on the interior side (occupant side) of the vehicle cabin. The airbag body 3 is formed into a bag shape by a base fabric joint 5 formed by joining the vehicle-side base fabric and the occupant-side base fabric by sewing, bonding, welding, or the like. The airbag body 3 has a length that allows it to be placed across the front and rear seats of the vehicle so as to protect occupants seated in the front and rear seats of the vehicle. The interior of the airbag body 3 is partitioned by the base fabric joint 5 to provide large inflation spaces 7, 7 in the front seat and the rear seat. The airbag body 3 has multiple (here, three) retention joints 9 formed by sewing, bonding, welding, or the like that maintain the airbag body 3 in a deployed state. A gas introduction section 11 in which an inflator I is placed is provided above the center of the interior of the airbag body 3 in the longitudinal direction.

[0012] The inflator I is a device that introduces gas (inflation gas) into the airbag body 3 via the gas introduction section 11. The inflator I includes, for example, an igniter and a gas generating agent. The inflator I rapidly introduces gas into the airbag body 3 by the igniter combusting the gas generating agent based on an electrical signal transmitted by an electronic control unit (not shown) mounted on the vehicle when it detects or predicts a vehicle collision or the like. When the vehicle collides, gas flows into the airbag body 3 from the inflator I via the gas introduction section 11, causing the airbag body 3 to inflate and deploy, thereby protecting the occupant from the impact of the vehicle collision.

[0013] The airbag body 3 is fixed to a vehicle member via a plurality of (four in this example) fixing members F. A band-shaped tether 13 is integrally provided on one longitudinal side of the airbag body 3, and the airbag body 3 is held on the vehicle member by fixing an end of the tether 13 to the vehicle member. The fixing members F are respectively disposed on a plurality of (four in this example) mounting portions 15 integrally provided on the airbag body 3. The fixing members F are formed, for example, in an L-shape when viewed from the side. One end of the L-shape of the fixing members F is formed wider than the width of the mounting portions 15 so as to be engageable with the mounting portions 15. The other end of the L-shape of the fixing members F is formed narrower than the width of the mounting portions 15, and the end that passes through the mounting portions 15 is fixed to a fixing portion (not shown) provided on the vehicle member. The fixing members F are disposed on the mounting portions 15 so as to hold the airbag body 3 on the vehicle member.

[0014] As shown in FIGS. 1 to 4, the mounting portion 15 is formed, for example, by folding back the longitudinal middle portion of two overlapping rectangular mounting base fabrics, with the end portion being disposed in the portion where the vehicle-side base fabric and the occupant-side base fabric of the airbag main body 3 overlap. The end portion of the mounting portion 15 is joined to the airbag main body 3 by a plurality (two in this case) of mounting joints 17 formed by sewing, bonding, welding, etc., and the mounting portion 15 is provided integrally with the airbag main body 3. The mounting portion 15 is provided with a mounting hole 19 penetrating the mounting portion 15, through which a fixing member F is inserted. Note that a plurality (two in this case) of hole joints 21 formed by joining a plurality of mounting base fabrics by sewing, bonding, welding, etc. are disposed around the mounting hole 19, reinforcing the periphery of the mounting hole 19.

[0015] The mounting hole 19 has a pair of ends 23 , 23 and an opening 25 .

[0016] The pair of ends 23, 23 are arranged spaced apart on a straight line L set on the mounting portion 15. The length between the pair of ends 23, 23 is set to be longer than the width of the fixing member F so that the fixing member F can be inserted into the mounting hole 19.

[0017] The opening 25 is formed by cutting or the like in the mounting portion 15, and is formed across the pair of end portions 23, 23. The opening 25 is closed when the fixing member F is not placed in the mounting portion 15. When the fixing member F is placed in the mounting portion 15, the opening 25 is opened, and the fixing member F is inserted and placed.

[0018] In the closed state, at least a portion of the opening 25 is disposed at a position different from the straight line L set in the mounting portion 15. In this embodiment, a midpoint 27 located midway between the pair of ends 23, 23 of the opening 25 is disposed at a position farthest from the straight line L. In addition, in the closed state, the opening 25 is disposed on only one side of the straight line L. Note that, instead of a configuration in which the opening 25 is disposed on only one side of the straight line L, the opening 25 may be disposed on only the other side of the straight line L, as shown in FIG. 5 .

[0019] By positioning at least a portion of the opening 25 in a closed state at a position different from the straight line L, the length of the opening 25 can be increased compared to when the entire opening 25 in a closed state is positioned on the straight line L. Therefore, when the opening 25 is opened, the opening is wider, making it easier to insert the fixing member F through the opening 25 and improving the ease of assembly. In addition, by positioning the midpoint 27 of the opening 25 in a closed state at a position farthest from the straight line L, the opening 25 can be efficiently opened wide when opened, further improving the ease of assembly. Furthermore, by positioning the midpoint 27 of the opening 25 in a closed state at a position farthest from the straight line L, when an external force due to the weight of the airbag body 3 or the like is applied to the opening 25, the external force can be evenly received by the opening 25. Therefore, the durability of the opening 25 against external forces can be improved. In addition, by positioning the opening 25 in a closed state on only one side of the straight line L, the opening 25 can be easily opened, further improving the ease of assembly.

[0020] Such an airbag 1 includes an airbag body 3 that is placed in a folded state on a vehicle member of a vehicle and inflates when gas flows in to protect a vehicle occupant. The airbag body 3 is also provided with an attachment portion 15 in which a fixing member F that is fixed to the vehicle member is placed. The attachment portion 15 is also provided with an attachment hole 19 through which the fixing member F is inserted. The attachment hole 19 has a pair of end portions 23, 23 that are spaced apart on a straight line L, and an opening 25 that is formed across the pair of end portions 23, 23. At least a portion of the opening 25 is positioned at a position different from the straight line L when the opening is closed.

[0021] By arranging at least a portion of opening 25 in a closed state at a position different from straight line L, the length of opening 25 can be made longer compared to when opening 25 in a closed state is entirely arranged on straight line L. Therefore, when opening 25 is opened, the opening becomes wider, making it easier to insert fixing member F into opening 25 and improving assembling performance.

[0022] Therefore, in such an airbag 1, the assembly efficiency can be improved.

[0023] In addition, in the opening 25, a midpoint 27 located midway between the pair of ends 23, 23 is located at a position farthest from the straight line L when the opening 25 is in a closed state.

[0024] By locating the midpoint 27 of the opening 25 in the closed state at the position farthest from the straight line L, the opening 25 can be opened efficiently and widely when opened, further improving the ease of assembly. In addition, when an external force due to the weight of the airbag body 3 or the like is applied to the opening 25, the external force can be received evenly by the opening 25. This improves the durability of the opening 25 against external forces.

[0025] In addition, the opening 25 is disposed on only one side of the straight line L when in a closed state.

[0026] By arranging the opening 25 in the closed state on only one side of the straight line L, the opening 25 can be easily opened, and the ease of assembly can be further improved.

[0027] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment.

[0028] For example, the airbag according to this embodiment is applied as a curtain airbag, but is not limited to this and may be an airbag applied to, for example, the steering wheel of the driver's seat or the instrument panel of the passenger's seat.

[0029] Furthermore, although the entire opening is positioned in a position that is not in a straight line, this is not limited to this, and part of the opening may be positioned in a straight line and other parts of the opening may be positioned in a position that is not in a straight line.

[0030] Furthermore, the openings are arranged on only one side of the straight line, but this is not limiting. For example, the openings may be formed in a wave shape and arranged on both sides of the straight line. [Explanation of symbols]

[0031] 1 airbag 3 Airbag body 15 Mounting part 19 Mounting hole 23 End 25 Opening 27 Midpoint F Fixing member L straight line

Claims

1. an airbag body that is disposed in a folded state on a vehicle member of a vehicle and inflates with an inflow of gas to protect an occupant of the vehicle; The airbag body is provided with an attachment portion on which a fixing member to be fixed to the vehicle member is disposed, The mounting portion is provided with a mounting hole through which the fixing member is inserted, The mounting hole has a pair of ends spaced apart on a straight line and an opening formed across the pair of ends, The airbag has at least a portion of the opening that is disposed at a position different from the straight line when the airbag is closed.

2. The airbag according to claim 1, wherein the opening has a midpoint located midway between the pair of ends, the midpoint being located at a position farthest from the straight line when the opening is in a closed state.

3. 3. The airbag according to claim 1, wherein the opening is disposed on only one side of the straight line when the airbag is closed.

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