JP2001277975A - Fixing tool for air bag device and air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce a manufacturing cost by simplifying a manufacturing process of a fixing tool for a belt-like air bag device for fixing a cover body to a baseplate. SOLUTION: A side wall part 42 of the cover body 12 is fixed by being sandwiched by a peripheral wall part 22 of the baseplate 11 and an annular belt 18. The belt 18 is constituted by connecting one end part 54 and the other end part 55 of belt-like metal by a connecting part 56. In the connecting part 56, a first locking part 64c and a second locking part 65a formed in one end part 54 are engaged with a first locking receiving part 68a and a second locking receiving part 68b formed in the other end part 55. Width directional deformation of the belt 18 is restrained to facilitate installing work of the belt 18 to the cover body 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an annular airbag device fixing device for fixing a cover body to a support member, and an airbag device provided with the airbag device fixing device.

[0002]

2. Description of the Related Art Conventionally, for example, an airbag device provided in a boss portion of a steering wheel or the like to protect a driver of an automobile from a collision impact or the like is known. The airbag device includes an inflator that injects gas, a bag-shaped airbag folded and stored, a cover body that covers the airbag, and the inflator, the airbag, and the cover body. And a base plate. Then, when detecting the collision of the vehicle, that is, when detecting a sudden deceleration of the vehicle or more, the airbag device rapidly injects gas from the inflator to inflate and deploy the airbag,
The cover body is broken by a predetermined tear line by the pressure of the inflation and is deployed in a door shape, and the airbag is projected from the cover body and inflated and deployed in front of the occupant.

[0003] The cover body has a covering portion for covering the folded airbag, and a mounting piece projecting downward from the covering portion, and is formed in a substantially box shape with an open lower surface. I have. The base plate also includes a substrate portion to which an inflator or an airbag is attached, and a support piece projecting downward from the substrate portion, and is formed in a substantially box shape with an open lower surface. Then, in a state where the mounting piece is fitted to the outer peripheral portion of the support piece, the mounting piece, the support piece, and the like are fixed with a large number of rivets, and the cover body is fixed to the base plate.

However, such a configuration using a large number of rivets for fixing the cover body has a problem that the number of parts increases and the assembling process becomes complicated, so that it is difficult to reduce the manufacturing cost. .

In this respect, for example, Japanese Patent Application Laid-Open No. Hei 10-23625
The configuration described in Japanese Patent Publication No. 8 is known. In this configuration, an annular fixture is used by connecting both ends of the band-shaped member, and the fixture is fitted to the outer peripheral side of the mounting piece of the cover body fitted to the base plate, and the base plate and the fixture are The mounting piece of the cover body is sandwiched and held therebetween.

In order to connect both ends of the fixture to each other, a substantially T-shaped piece formed at one end of the fixture is replaced with a substantially T-shaped hole formed at the other end of the fixture. It is inserted into the part and locked, and is fixed by spot welding at three places.

[0007]

However, as described above, in a configuration in which a plurality of locations are welded in order to connect both ends of the fixture, the number of steps and the processing cost increase, and it is difficult to reduce the manufacturing cost. Problems. On the other hand, when welding is abolished, when the fixing tool is fitted into the cover body, the engaging piece formed on the fixing tool is bent around the portion locked in the hole as a fulcrum, and the airbag is easily distorted. There is a problem that the assembling work of the device tends to be complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a fixing device for an airbag device and an airbag device which can reduce the manufacturing cost and improve the workability of assembling the airbag device. Aim.

[0009]

According to a first aspect of the present invention, there is provided a fixing device for an airbag device, wherein the fixing member is fitted on an outer peripheral side of a cover fitted on an outer peripheral side of a supporting member for supporting the airbag. An annular airbag device fixing device for fixing the main body portion to the supporting member, wherein the main body portion has a substantially band shape, and a connection is made by connecting one end portion and the other end portion located at the longitudinal end of the main body portion. A second locking portion provided near the distal end of the one end portion, and a first locking portion provided at the one end portion at a distance from the distal end side of the second locking portion. A locking portion, a first locking receiving portion provided on the other end portion and locking the first locking portion, and a second locking portion provided on the other end portion and locking the second locking portion. And two locking receiving portions.

In this configuration, the cover is fixed with the cover interposed between the support and the fixture for the airbag device. The fixing device for an airbag device is configured by connecting one end and the other end of a substantially band-shaped main body with a connecting portion. The connecting portion locks the first locking portion and the second locking portion which are separated from each other to the first locking receiving portion and the second locking receiving portion, respectively, so that a force in a direction intersecting the longitudinal direction of the main body portion. Is applied to the connecting portion, the connecting portion is maintained in a straight line without being bent, so that the assembling work of the airbag device is facilitated. Therefore, work such as welding is not always necessary,
Manufacturing costs are easily reduced.

According to a second aspect of the present invention, there is provided the airbag device fixing device according to the first aspect.
The second locking portion includes at least two spaced apart in the width direction of the main body.
At this point, it comes into contact with the second lock receiving portion.

In this configuration, even in the second locking portion alone, the shape of the connecting portion is maintained against the force in the direction intersecting the longitudinal direction of the main body portion, and the assembling work of the airbag device is facilitated. Become.

According to a third aspect of the present invention, there is provided the airbag device fixing device according to the first or second aspect, wherein the first locking portion and the second locking portion correspond to one end of the main body. It is formed by bending.

[0014] With this configuration, the production becomes easy and the production cost is reduced.

According to a fourth aspect of the present invention, there is provided a fixing device for an airbag device according to any one of the first to third aspects, wherein the first locking portion and the second locking portion have a longer longitudinal portion of the main body. And a third locking portion that is spaced apart in the direction and a third locking receiving portion that engages with the third locking portion.

[0016] In this configuration, the third locking portion is the third locking portion.
The engagement with the locking receiving portion further enhances the rigidity of the connection portion, and facilitates the assembling work of the airbag device.

According to a fifth aspect of the present invention, there is provided an airbag apparatus, comprising: an airbag which is inflated and deployed by inflow of gas;
A support member to which the airbag is attached, a mounting piece fitted to the outer peripheral portion of the support portion, a cover body covering the airbag, and the cover body fitted to the outer peripheral portion of the mounting piece portion; An airbag device fixing device according to any one of claims 1 to 4, which is fixed to the support member.

In this configuration, claims 1 to 4
Since the airbag device fixing device according to any one of the above is provided, the assembling work is facilitated, and the manufacturing cost is reduced.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a fixing device for an airbag device and an airbag device according to an embodiment of the present invention.

In FIG. 2, reference numeral 1 denotes an airbag device, which is mounted on a steering wheel of an automobile (not shown). The steering wheel includes a steering wheel body, an airbag device 1 attached to the occupant side of the steering wheel body, that is, the front side.
The steering wheel is attached to a steering shaft that is tilted so as to be appropriately adjustable, and is normally used in a tilted state.
The vehicle body side will be described as the lower side or the rear side, the windshield side, that is, the front upper side of the vehicle as the front side, and the occupant side, that is, the rear lower side of the vehicle as the rear side. Further, the steering wheel body includes an annular rim (not shown), a boss located inside the rim, and a plurality of spokes (in this embodiment, four spokes) connecting the rim and the boss. Part and the like. At the lower part of the boss portion, a boss fitted to the steering shaft and a boss plate separately or integrally fixed to the boss are provided, and a horn switch mechanism or the like is provided on the boss plate as necessary. A pair of mounting brackets on both sides as an airbag device mounting member are fixed with screws via the airbag device, and the airbag device 1 is mounted to these mounting brackets using cap bolts. Further, the lower side of the boss is covered with a lower cover.

The airbag device 1 also called an airbag module has a base plate as a support member.
11, a cover body (airbag cover) 12, an airbag 15, an inflator
16, a retainer 17, and a belt 18 as a band-shaped member as a fixing device for an airbag device.

The base plate 11 has a substantially left-right symmetrical shape, and is formed by pressing a metal plate into a flat plate-like substrate portion 21 having a substantially polygonal planar shape, and is integrally formed downward from the outer peripheral portion of the substrate portion 21. Surrounding wall as bent (standing) support
It is formed in a substantially box shape with the lower surface opened from 22. In addition, a circular hole-shaped inflator insertion hole 23 is formed in a substantially central portion of the substrate portion 21, and a plurality of bolt through holes 24 are formed around the inflator insertion hole 23. I have. Further, the peripheral wall portion 22 has a polygonal cylindrical shape, and faces outward, that is, in a radial direction (radial direction) from the peripheral surface.
An inner engaging piece 25 as an engaging portion is integrally protruded by cutting and raising. Brackets 27 are provided on the peripheral wall 22 on both sides of the base plate 11, and cap bolts are screwed into the bolt holes 28 formed in the bracket 27 by caulking or the like. Square nut is fixed. Further, stoppers 32 are formed at the lower end of the peripheral wall 22 at predetermined intervals in the circumferential direction so as to be bent outward.

On the other hand, the cover body 12 is integrally formed of a synthetic resin, for example, is formed by injection-molding a thermoplastic elastomer such as an olefin elastomer (thermoplastic olefin) using a metal mold. It has an outer shape as a center pad combined with a steering wheel body having a spoke portion. That is, the cover body 12 is provided with a cover portion 41 that covers a part of the surface side of the boss portion and the spoke portion of the steering wheel body.
And a side wall portion 42 as a mounting piece portion vertically protruding (standing) downward from the lower surface of the covering portion 41, and are integrally formed, and between the covering portion 41 and the inside of the side wall portion 42. The enclosed part is an airbag storage part (container part) for storing the airbag 15, and the lower surface of the covering part 41 has a substantially H-shaped flat surface facing the airbag storage part. The fragile tear line is concavely formed to be thin. Also,
The side wall portion 42 of the cover body 12 has a polygonal cylindrical shape, and the shape of the inner surface substantially matches the outer shape of the substrate portion 21 of the base plate 11 so as to fit therein. The side wall portion 42 has an inner engagement hole (first through hole) 46 as an engagement receiving portion penetrating in the radial direction, and an outer engagement hole (second through hole) as the engagement receiving portion. ) 47 are respectively formed in a plurality of rectangular shapes. Further, the side wall portion 42 is formed with a notch projection (not shown) directed inward, and a cutout portion 49 which is located on both sides of the cover body 12 and penetrates in both sides and opens downward. ing.

The airbag 15 is formed, for example, in a flat bag shape by sewing two base cloths together, and has a circular bottom gas inlet 15a through which an inflator 16 is inserted.
Are formed, and a plurality of bolt holes (mounting holes) 15b are formed around the gas inlet 15a.

Further, the inflator 16 has a substantially cylindrical main body 16a, and a mounting flange 16b is protruded from an outer peripheral portion of the main body 16a. A plurality of gas injection ports 16c for injecting gas into the main body 16a are formed above the mounting flange 16b, and a plurality of bolt holes (mounting holes) are formed in the mounting flange 16b. A hole 16d is formed. Lead wires are led out from the lower surface of the main body 16a, and an inflator cover 16e made of synthetic resin or the like is fitted and attached.

The retainer 17 has a substantially annular retainer body 17a. And this retainer body 17
a has a substantially U-shaped cross section having upper and lower flange portions on the inner and outer peripheral sides, and four stud bolts 17b are fixed to the retainer body 17a downward. . A nut (fixed nut) 50 is screwed and fixed to each of these stud bolts 17b from the lower end side.

Further, the belt 18 can be called a fixing tool. As shown in FIGS. 1 to 5, a belt-like steel plate having a substantially constant width is pressed or bent, and both ends are connected to each other. It is integrally formed in a substantially annular shape of a polygonal cylindrical shape. That is, the belt 18 has a cover
The main body part 53 that is preliminarily bent in accordance with the outer peripheral surface of the side wall part 42 of 12
A connecting portion 56 which is a fixed portion in which one end portion 54 and the other end portion 55 of the steel plate are overlapped and connected to a part of the main body 53, which is located on the rear side in the present embodiment. Is provided.

The main body 53 is located on both sides,
Fitting portions 58 that fit into the cutouts 49 of the cover body 12 are formed so as to be recessed on the inner peripheral side, and these fitting portions 58 include
An attachment hole 59 having an oblong hole shape or a circular hole shape is formed.

From a plurality of positions of the main body 53, a positioning piece 60 is bent inward and integrally protruded from the lower end toward the inward side, and from the middle in the width direction, that is, from the middle in the vertical direction. The outer engagement piece 61 as an engagement portion is integrally protruded by being cut and raised into a substantially semi-cylindrical shape. Further, from the upper end of the main body 53, the main body 53 is inclined in a direction of expanding outward, and an inclined guide portion 62 is integrally formed.

Further, a substantially T-shaped locking piece 64 is formed at the free end side, that is, at the distal end of the one end 54 of the connecting portion 56, and the base end of the locking piece 64 is formed. A locking ridge 65 having a ridge shape is formed on the side. The locking piece 64 has a width smaller than that of the main body 53 and a stopper-shaped connecting piece 64a bent stepwise to the outer periphery. The connecting piece 64a is connected to the distal end of the connecting piece 64a. Department
A head 64b having a width larger than 64a and a width smaller than the body 53, and a head 64b located on both sides of the connection piece 64a;
and a pair of first locking portions 64c formed to be bent outward from the base end side of b. In addition, the locking ridge 65 is formed in a ridge shape projecting outward across the entire width of the one end 54, and the base end surface is substantially perpendicularly bent to an adjacent portion. The second locking portion 65a has a shape. The surface of the locking projection 65 opposite to the second locking portion 65a is formed in a curved shape.

The other end 55 of the connecting portion 56 includes
A locking receiving hole 67 and a locking receiving ridge 68 located on the distal end side of the locking receiving hole 67 are provided. The locking receiving hole 67 has a large width on the base end side, and the head 64 of the locking piece 64.
b and the connecting piece 64a have a substantially T-shape that can be inserted.
The locking receiving ridge 68 is bent at substantially two right angles at two places and protrudes in a substantially U-shape on the outer peripheral side. The first locking receiving part 68a having a stopper shape on the base end side and the first locking receiving part 68a on the distal end side are provided. A second locking receiving portion 68b having a stopper shape is provided.

Next, the manufacturing process of the airbag device 1 of the present embodiment will be described.

First, the belt 18 is formed by pressing a strip-shaped steel plate.
After bending and the like, the one end 54 and the other end 55 are engaged with each other to be integrally formed in a substantially annular shape. This connection work is
Is distorted along the horizontal direction, and the locking piece 64 of the one end 54 is inserted into the locking receiving hole 67 of the other end 55. From this state, the one end 54 and the other end 55 are slid in a direction away from each other, and are overlapped so as to be in close contact with each other. In this state, the first locking portion 64c of the one end portion 54 comes into contact with and engages with the first locking receiving portion 68a of the other end portion 55, and the locking protrusion 65
And the second locking portion 65a is brought into contact with and engaged with the second locking receiving portion 68b. In this state, 2 in the circumferential direction
It becomes a so-called double stopper that engages at several places, and is firmly held so as not to extend in the circumferential direction, that is, so that the diameter dimension does not increase. Further, in each engagement portion, the one end 54 and the other end 55 are in contact with each other at a plurality of locations separated in the width direction, and in particular, the projection-shaped locking By the engagement of the ridge portions 65, the one end portion 54 and the other end portion 55 are in contact with each other over substantially the entire length in the width direction, and the rigidity against distortion in the width direction, that is, the vertical direction is improved, and the shape retention is improved. It has become.

The base plate 11 and the cover 12 are formed in a predetermined shape in advance.

Then, the retainer 17 is inserted into the airbag 15 from the gas inlet 15a by deforming the gas inlet 15a of the airbag 15 into an oblong shape, and the stud bolts 17b are used for bolts. The stud bolts 17b are pulled out from the through holes 15b, and the stud bolts 17b are inserted into the bolt through holes 24 of the base plate 11 from above, and the periphery of the gas inlet 15a is pressed onto the substrate 21 of the base plate 11.

Then, from this state, an automatic assembling operation is started by an automatic assembling machine driven by air pressure or the like.
That is, first, the airbag folding machine
15 is folded in a petal shape around the main body 16 a of the inflator 16 so that the airbag 15 fits within the outer shape of the substrate 21 of the base plate 11.

In this state, the airbag 15 is folded downward from the upper side of the base plate 11, and the cover body 12 is covered by automatic supply or the like, and is pushed in by a pneumatic press or the like. The airbag 15 is housed between the airbag 15 and the side wall 12, and the side wall 42 is fitted to the outer periphery of the substrate 21. In this state, each of the inner engaging pieces 25 of the base plate 11 engages with the inner engaging hole 46 of the cover body 12, respectively, and the lower end of the side wall 42 contacts the stopper 32 to regulate the fitting amount. Further, the locking projection projecting from the inner side of the side wall portion 42 engages with the base plate 11 to form the cover body.
The base plate 12 is accurately positioned on the base plate 11 and is retained.

Subsequently, the belt 18 is automatically supplied to a predetermined position or the like, and the main body 53 is pressed into the outer peripheral side of the side wall portion 42 of the cover body 12 using a pneumatic press device or the like (not shown). In this state, the outer engagement piece 61 of the belt 18 is inserted into the outer engagement hole 47, and is accurately positioned and retained.
The fitting portions 58, 58 on both sides of the belt 18 are fitted and positioned in the notches 49 of the cover body 12, and the positioning pieces 60 of the belt 18 are positioned.
Abuts against the lower end of the side wall portion 42 and is positioned. In this state, the side wall portion 42 of the cover body 12 is sandwiched between the peripheral wall portion 22 of the base plate 11 and the belt 18 while being compressed and elastically deformed, and The belt 18 holds the engagement with the hole 46, and the base plate 11 holds the engagement between the outer engagement piece 61 and the outer engagement hole 47,
The cover body 12 is firmly attached to the base plate 11.

Subsequently, the upper part of the main body 16a of the inflator 16 is pushed into the inflator insertion hole 23 and the gas inlet 15a from below the base plate 11, and the mounting flange is formed.
Stud bolt 1 of retainer 17 in bolt hole 16d of 16b
7b, and nuts 50 are screwed and tightened below the stud bolts 17b, respectively, so that the base plate 11 and the airbag 15 are jointly fastened between the retainer body 17a and the mounting flange 16b. Then, the assembly of the airbag device 1 is completed.

Then, the airbag device 1 assembled as described above is mounted on a mounting bracket that is erected from the boss of the steering wheel body. At this time, the mounting portion provided on the mounting bracket is fitted into the fitting portion 58 of the base plate 11, and in this state, the mounting through hole and the belt 18 provided in the mounting portion are provided from outside the mounting portion via a washer. The cap bolt is inserted into the mounting through hole 59 of the base plate 11 and screwed into the square nut through the bolt through hole 28 of the bracket 27 of the base plate 11. In this state, the inner peripheral surface is
The belt 18 in close contact with the outer peripheral surface of 42 is further tightened to the base plate 11 side by cap bolts.

When an impact such as a collision is applied to the automobile, a control unit (not shown) activates the inflator 16 to rapidly supply an inert gas such as nitrogen gas to the inside of the airbag 15 from the gas injection port 16c. Then, the gas causes the airbag 15 to inflate and deploy rapidly, and the pressure of this inflation causes the covering portion 41 of the cover body 12 to break along the tear line, protruding above the cover body 12, and
15 expands and deploys widely in front of the occupant to absorb and mitigate the shock applied to the occupant.

According to the present embodiment, the cover body
12 to the peripheral wall 22 of the base plate 11 made of metal.
Between the inner engagement piece 25 and the inner engagement hole 46, and between the outer engagement piece 61 and the outer engagement hole 47.
With the belt-like belt 18 capable of firmly attaching and holding the cover body 12 to the base plate 11 even when the airbag 15 is deployed, while maintaining the engagement with the belt-like belt 18.
In addition to the engagement between the first locking portion 64c and the first locking receiving portion 68a, the second locking portion 65a and the second locking receiving portion 68b are engaged. Since the belt 18 is heavily fixed and formed in a substantially annular shape, the shape can be firmly maintained only by engagement. Therefore, not only can the cover be firmly held when the airbag 15 is deployed, but also when the load that bends the connecting portion 56 is applied during the assembly of the airbag device 1 or the like, the load is shared and supported. However, the belt 18 can be held linearly so as not to be bent at the connecting portion 56. Therefore, the assembling work can be facilitated, and the manufacturing cost can be reduced. In addition, since spot welding work can be omitted when the belt 18 is manufactured, man-hours can be reduced and manufacturing costs can be reduced.

Further, at each of the engagement portions of the belt 18, one end 54 and the other end 55 are provided at a plurality of positions separated in the width direction.
Abuts, in particular, by engaging the ridge-shaped locking ridge 65 with the long groove-shaped locking receiving ridge 68 extending in the width direction,
Since the one end 54 and the other end 55 are in contact with each other over substantially the entire length in the width direction, the load in the direction in which the belt 18 is bent is
Supporting the entire width of 18, the rigidity against distortion in the width direction, that is, the vertical direction is improved, and the shape retention can be improved.

Further, since the belt 18 of the present embodiment can be manufactured by bending a belt-shaped member, it is easy to manufacture and can be manufactured at low cost.

In the above embodiment, the second locking portion
One end 54 and the other end 65a and the second locking
55 is formed in a ridge shape bent over the entire length in the width direction, but is not limited to this configuration.
As shown in the figure, an embossed portion, which is a plurality of columnar-shaped protrusions provided apart from each other in the width direction and projected on the outer peripheral side
The second locking portion can also be constituted by 71 and 71.

Further, the engagement between the locking portion and the locking receiving portion is 2
It is not limited to three places, but may be three or more places to further improve the rigidity. For example, as shown in FIG.
In addition, a third locking portion 74 is integrally provided from an upper end portion, which is an edge on one side, behind the locking ridge portion 65, and the other end portion 55 has a distal end portion. A third locking receiving portion 75, which is a pressing portion with which the third locking portion 74 engages, may be formed by notching or the like at an upper end portion, which is an edge of one side of the extended portion. In the configuration shown in FIG. 7, the third locking portion 74 is caulked into a hook shape, and is fixed by engaging with the third locking receiving portion 75 without using other members such as bolts. Also, rattling of the belt 18 alone can be prevented without requiring a process such as welding.

The belt 18 may be formed by pressing a thin metal plate, or may be formed of a material other than metal, for example, a resin material.

The airbag device 1 is not limited to the one provided on the steering wheel of an automobile. For example, an airbag device for an occupant in a passenger seat provided in an instrument panel in front of a passenger seat, or an airbag device provided in a seat or door is provided. The present invention can be applied to a bag device, and further can be applied to an object requiring protection from impact, such as a mobile body other than a vehicle such as an automobile.

[0049]

According to the first aspect of the present invention, the cover can be fixed by sandwiching the cover between the support and the airbag fixture. The fixing device for an airbag device is configured by connecting one end and the other end of a substantially band-shaped main body with a connecting portion, and the connecting portion is separated from the first locking portion and the second locking portion. Are locked to the first and second lock receiving portions, respectively, so that even when a force in a direction intersecting the longitudinal direction of the main body portion is applied to the connecting portion, the connecting portion is straight without being bent. , And the work of assembling the airbag device can be facilitated. Therefore, work such as welding is not always necessary, and the manufacturing cost can be easily reduced.

According to the fixing device for an airbag device of the second aspect, in addition to the effect of the first aspect, the second locking portion has the second locking portion at at least two points separated in the width direction of the main body. Since the abutment portion is in contact with the receiving portion, the shape of the connecting portion can be maintained against the force in the direction intersecting the longitudinal direction of the main body portion only with the second locking portion, and the assembling work of the airbag device can be facilitated.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects, the first locking portion and the second locking portion bend one end of the main body. Since it is formed in this way, it can be easily manufactured, and the manufacturing cost can be reduced.

According to the fixing device for an airbag device of the fourth aspect, in addition to the effects of the first to third aspects,
The third locking portion is engaged with the third locking receiving portion, so that the rigidity of the connection portion is further improved, and the assembling work of the airbag device can be facilitated.

According to the airbag device of the fifth aspect,
Since the fixing device for an airbag device according to any one of claims 1 to 4 is provided, an assembling operation is facilitated, and an airbag device with reduced manufacturing cost can be provided.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing a manufacturing process of a fixing device for an airbag device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the airbag device including the airbag device fixture according to the first embodiment.

FIG. 3 is a plan view of the fixing device for an airbag device.

FIG. 4 is a view of the fixing device for an airbag device in FIG.

FIG. 5 is a sectional view of the fixing device for an airbag device, taken along the line II of FIG. 4;

FIG. 6 is a partial perspective view illustrating a manufacturing process of a fixture for an airbag device according to another embodiment of the present invention.

FIG. 7 is a partial perspective view illustrating a manufacturing process of a fixture for an airbag device according to still another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airbag device 11 Base plate as a support member 12 Cover body 15 Airbag 18 Belt as a fixing device for an airbag device 22 Peripheral wall portion as a support portion 42 Sidewall portion as a mounting piece 53 Main body portion 54 One end portion 55 The other end Part 56 Connecting part 64c First locking part 65a Second locking part 68a First locking receiving part 68b Second locking receiving part 74 Third locking part 75 Third locking receiving part

Claims (5)

[Claims] An annular airbag device fixing tool that fits on an outer peripheral side of a cover body fitted on an outer peripheral side of a support member that supports an airbag and fixes the cover body to the support member. A main body part having a substantially band shape, and a connecting part connecting one end and the other end located at the longitudinal end of the main body part, and the connecting part is near the tip of the one end. A second locking portion provided on the other end; a first locking portion provided on the one end portion at a distance from a tip end of the second locking portion; and a first locking portion provided on the other end portion. The first part is locked
A locking receiving portion, a second locking portion provided on the other end portion and locking the second locking portion.
A fixing device for an airbag device, comprising: a locking receiving portion. 2. The fixing device for an airbag device according to claim 1, wherein the second locking portion contacts the second locking receiving portion at at least two points separated in the width direction of the main body. 3. The first locking portion and the second locking portion are formed by bending one end of a main body.
Or the fixing device for an airbag device according to 2. 4. A third locking portion which is spaced apart from the first locking portion and the second locking portion in the longitudinal direction of the main body, and a third locking portion.
The fixing device for an airbag device according to any one of claims 1 to 3, further comprising a third locking receiving portion that engages with the locking portion. 5. An airbag, comprising: an airbag that is inflated and deployed by inflow of gas; a support member to which the airbag is attached; and a mounting piece fitted to an outer peripheral portion of the support portion. And a fixing member for the airbag device according to any one of claims 1 to 4, wherein the fixing member is fitted to an outer peripheral portion of the mounting piece portion to fix the cover member to the support member. Airbag device.