JPH1035389A - Covering member of air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and strongly attach a decorative member of a separate body, to a covering body of an air bag device. SOLUTION: A circular insertion part 32 is formed on a resin covering body 20. Plural stopper receiving parts 35 are projected to the inside of the insertion part 32. An emblem 21 has an axial part 46 at a lower side of a decorative part body 41, and plural stoppers 47 are projected from the axial part 46 to the outer peripheral side. The emblem 21 is inserted into the insertion part 32 from the surface side, and rotated by a specific angle, to stop the stoppers 47 to the lower face of the stopper receiving parts 35. An inclined rib 48 is projected on an upper face of the stopper 47.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover body of an airbag device provided with a decorative member.

[0002]

2. Description of the Related Art Conventionally, there has been used an airbag device which is provided, for example, at a center boss portion of a steering wheel of an automobile and which inflates and deploys an airbag to reduce a shock applied to an occupant in the event of a vehicle collision. I have. That is,
This airbag device includes an inflator that injects gas, an airbag that is inflated and deployed by the gas, a cover body that covers the airbag, and the like.When an impact such as a collision of a vehicle is detected, the gas is supplied from the inflator. To inflate the airbag, instantaneously break the cover portion of the cover body formed of the soft resin and deploy it like a door, and protrude the airbag to inflate and deploy it to the front of the occupant. It has become.

On the other hand, conventionally, in a pad body mounted on a boss portion of a steering wheel without an airbag device, a separate badge or the like is attached to a covering portion of the pad body to enhance a decorative effect.

[0004] In this respect, in the airbag device, since the covering portion is deployed at a high speed when the airbag is inflated and deployed, for the purpose of decoration, a decorative portion such as a character or a mark is integrated with the covering portion of the cover body. Configurations for forming are known. However, in the configuration in which these decorative portions are formed integrally with the cover body, the decorative portions have the same texture and color tone as the entire cover body, and thus have a problem that they are not conspicuous and hard to improve the decorative effect.

Therefore, for example, Japanese Patent Application Laid-Open No. 7-257309 describes
As shown in Japanese Patent Laid-Open Publication No. H10-115, there is known a configuration in which a decorative member is insert-molded and embedded in a resin-made covering portion of a cover body. However, in such a configuration in which insert molding is performed, it is difficult to accurately and reliably hold a thin decorative member (insert body) in a mold during molding, and a sharp parting line between the decorative member and the resin is obtained. Due to the edge of the mold, the appearance of the decorative member is deteriorated, and since the decorative member is integrally formed with the cover body, masking is required when painting the surface of the cover body, and workability is deteriorated. In addition, when the masking position is shifted, the appearance of the surface is deteriorated and the productability is impaired, so that the yield is deteriorated, and also the management of the manufacturing process becomes complicated, so that both increase the manufacturing cost. Have a problem.

For example, as shown in Japanese Patent Application Laid-Open No. 7-257308, a decorative member having an annular rivet portion is used, and the rivet portion is inserted into a through hole formed in a covering portion of a cover body. There is known a configuration in which the rear surface is expanded and swaged and fixed. However, in this configuration, the decorative member having the rivet portion needs to have sufficient plasticity, ductility, and caulking strength, and is made of a specific metal material. When the material is limited in this way, when a conventionally used resin badge having a high decorative effect or a transparent resin laminated on a colored resin is used, these members and the rivet portion are bonded to each other. Thus, there is a problem in that the manufacturing cost is increased, the bulk is increased, and the mounting place as a decorative member used for the cover body of the airbag device is limited.

[0007]

As described above, in the configuration in which a separate decorative member is attached to the cover body of the airbag device to enhance the decorative effect, it is difficult to improve the external appearance by using the insert molding. In order to improve the appearance, there is a problem that the manufacturing process is complicated and the manufacturing cost is increased. Further, in the configuration in which the rivet portion fixed by caulking to the cover body is provided on the decorative member, the material is limited to a material having characteristics such as a predetermined caulking strength, and there is a problem that the decorative effect cannot be enhanced inexpensively. I have.

The present invention has been made in view of the above points, and provides a cover body of an airbag apparatus having a decorative member which can be easily and firmly attached, can reduce the manufacturing cost, and has a high decorative effect. The purpose is to:

[0009]

According to a first aspect of the present invention, there is provided a cover body for an airbag device, which covers an airbag, and includes a covering portion that is deployed when the airbag is deployed, and a decorative member attached to the covering portion. The coating portion is provided with an insertion portion provided with a locking receiving portion and opening to the front side, and the decorative member includes a decorative portion main body abutting on the surface side of the locking receiving portion,
And a locking portion that is inserted into the insertion portion and locked to the back side of the locking receiving portion.

In this configuration, the lock receiving portion of the covering portion is sandwiched between the decorative portion main body and the locking portion, and the decorative member is firmly attached to the covering portion. There is no need to insert the decorative member into the covering portion, and the manufacturing process is simplified. There is no need to plastically deform the decorative member, and the material of the decorative member is not limited.

According to a second aspect of the present invention, in the cover body of the airbag apparatus according to the first aspect, the insertion portion of the covering portion is provided so as to protrude from the outer peripheral side toward the inner peripheral side. A lock receiving portion and an insertion portion adjacent to the lock receiving portion are provided, and the locking portion of the decorative member is inserted through the insertion portion and rotated in a direction having the insertion direction as an axial direction. Then, it is locked on the back side of the lock receiving portion.

In this configuration, since the decorative member can be attached to the covering portion only by inserting and rotating the decorative member in a predetermined direction, the manufacturing process is simplified.

According to a third aspect of the present invention, in the cover body of the airbag device according to the second aspect, at least one of the decorative member and the covering portion is provided along a circumferential direction in which the decorative member rotates. And an inclined portion whose height dimension gradually increases toward at least the other of the decorative member and the covering portion.

In this configuration, when the decorative member is rotated, the inclined portion is pressed against the member on the other side, and the decorative member is firmly fixed to the covering portion.

According to a fourth aspect of the present invention, there is provided the cover body of the airbag apparatus according to the first aspect, further comprising a deformation preventing tool which engages with the engaging portion of the decorative member, and the insertion portion of the covering portion. Is provided with an insertion portion adjacent to the locking receiving portion, and the locking portion of the decorative member is inserted through the insertion portion while being elastically deflected, and the deflection is engaged by the deformation preventing tool. It will be blocked.

In this configuration, the locking portion of the decorative member is inserted into the insertion portion while being elastically displaced and locked by the locking receiving portion, and the deformation preventing device is engaged with the locking portion. By preventing the displacement of the locking portion, the decorative member can be attached to the covering portion, thereby simplifying the manufacturing process.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cover of an airbag device according to the present invention will be described below with reference to the drawings.

In FIG. 2, reference numeral 1 denotes an airbag device (airbag module). The airbag device 1 is attached to a boss of a steering wheel body of a steering wheel (not shown), and inflates and deploys an airbag (not shown). The shock applied to the occupants is reduced. Hereinafter, the front side which is the occupant side of the airbag apparatus 1, that is, the center direction of the protruding direction of the airbag will be referred to as the upper side and the front side, and the vehicle body side (the steering shaft side) will be referred to as the lower side and the back side.

The airbag device 1 has a metal base plate 11 fixed to the steering wheel main body. The base plate 11 has a bag-shaped airbag and a cover body ( An airbag module cover) 12 is attached, and an inflator for injecting gas from below the base plate 11 is attached.

The cover body 12 is a cover body made of resin.
The cover 20 includes an emblem 21 as a decorative member attached to the cover body 20.

The cover body 20 is formed integrally by, for example, injection-molding a soft resin material such as an olefin-based thermoplastic elastomer. The cover body 20 covers a part of the boss portion and the spoke portion of the steering wheel body. And a mounting piece 23 projecting downward from the back surface of the covering part 22 in a rectangular cylindrical shape, and the covering part 22 and the mounting piece part 23 are provided.
The portion surrounded by the space is a storage portion (case body) for storing the small folded airbag.

The cover 22 of the cover body 20 includes
A tear line 24 that is more fragile than the other part of the covering part 22 is formed facing the storage part. And this tear line 24
A center break line 24a formed in a thin shape by recessing the back surface side of the covering portion 22 in a groove shape and extending in both directions, and connected to the center breaking line 24a, the vicinity of both sides of the covering portion 22 in the front-rear direction. And a pair of side break lines 24b extending on both sides, and is formed in a substantially H-shaped plane. The central portion in the longitudinal direction of the center breaking line 24a is curved toward the front side in a plane arc shape. The tear line 24 allows the mounting piece 23 of the cover 22 to be mounted.
In the part surrounded by, the door piece parts 25a and 25b
Are formed.

The cover body 20 is attached to the mounting piece 23
Is fixed to the base plate 11 by using a plurality of reinforcing plates 26 and rivets R in a state of being fitted to the outer peripheral portion of the base plate 11.

Further, a decorative portion 31 is provided integrally with a substantially central portion of the covering portion 22 of the cover body 20. The decorative portion 31 includes an insertion portion 32 having a substantially circular hole shape, and an insertion portion 32 having a substantially circular shape. And an outer decorative portion 33 surrounding the outer side of the main body. And the insertion part
As shown in FIGS. 1 to 3, 32 has a substantially cylindrical outer peripheral surface 32a which penetrates the covering portion 22 vertically. Further, a pair of locking receiving portions 35, 35 on both sides protrude from the intermediate portion in the height direction of the insertion portion 32 toward the center side.
The locking receiving portions 35 have a central angle of about 9 for example.
It has a flat fan-like plate shape of 0 degrees, and between the locking receiving portions 35, 35, a circular shaft insertion portion 36 is formed. Adjacent in the direction, fan-shaped insertion portions 37, 37 are formed. In addition, each lock receiving part 3
On the upper surfaces of 5, 35, concentric concave grooves 35a, 35a are formed, respectively.

On the other hand, as shown in FIGS. 1 to 4, the emblem 21 is formed of a resin or the like or an integral combination of a plurality of members. Lower body 42
And are screwed together. The decorative part main body 41 has a disk shape whose upper surface swells smoothly, and a screw hole 44 is formed in the center of the lower surface, and from the lower surface, the outer shape of the decorative part main body 41 is concentric. In shape,
A guide rib 45, which is formed in a circumferential shape or an arc shape and has a substantially constant projecting dimension from the lower surface, is provided.

The decorative lower body 42 has a substantially cylindrical shaft portion 46 and a pair of locking portions 47 projecting from the lower portion of the shaft portion 46 to the outer periphery. I have. A male screw portion 46a is formed on the upper peripheral surface of the shaft portion 46. The male screw portion 46a is screwed into the screw hole 44 and tightened, so that the decorative portion main body 41 and the decorative lower body 42 are firmly connected to each other. It is connected to. Further, one of the screw hole 44 and the male screw portion 46a has an irregular pitch, so that the tightened state is not easily loosened. The locking portions 47, 47 have, for example, a flat fan-like plate shape with a central angle of about 90 degrees.
From the upper surface of the projection 47, an engagement rib 48 as an inclined portion having a substantially circular arc shape in a plane is protruded. And these engaging ribs 4
8, 48 are formed in a rotationally symmetrical shape with respect to the shaft portion 46. From the one end portion 48a to the other end portion 48b, the protrusion dimension from the upper surface gradually increases, and the distance from the outer peripheral surface of the shaft portion 46 is increased. Is formed to be inclined in the up-down direction and the circumferential direction (rotational direction) so as to gradually decrease. Further, on the lower surfaces of the locking portions 47, 47, respectively, the decorative lower body 42 is provided.
Alternatively, holes 49, 49 for inserting a turning tool for rotating the emblem 21 are formed.

The outer shape of the decorative portion main body 41 and the decorative lower body 42 can be inserted into the insertion portion 32 of the cover portion 22 of the cover main body 20, and the shaft portion 46 can be inserted through the cover portion 22 of the cover main body 20. The locking portion 47, 47 is inserted through the insertion portion 37, 37
Are formed in a complementary shape that can be inserted.

The emblem constructed as described above
The cover 21 is easily and firmly attached to the cover portion 22 of the cover main body 20 simply by being inserted into the insertion portion 32 of the cover portion 22 from the front side and rotating. That is, first, the locking portions 47, 47 of the emblem 21 are aligned and inserted into the insertion portions 37, 37 of the covering portion 22, and the lower surface of the decorative portion main body 41 is brought into contact with the locking receiving portions 35, 35 of the covering portion 22.
Insert the turning tool into the holes 49, 49 of the emblem 21 from the back side of the covering part 22,
By rotating in the direction of arrow A shown in FIG. 4 which coincides with the tightening direction of the screw holes 46a and the screw holes 44, the lower surface of the decorative portion main body 41 comes into contact with the upper surfaces of the lock receiving portions 35, 35. The emblem 21 is attached to the covering portion 22 with the upper surfaces of the locking portions 47, 47 abutting against the lower surfaces of. At this time, on the upper surfaces of the locking receiving portions 35, 35, the guide rib 45 and the guide grooves 35a,
Sliding contact is made between the lock receiving portions 35a and 35a, thereby preventing the locking receiving portions 35, 35 from being deformed in the radial direction. At the same time, engagement ribs 48 projecting from the upper surfaces of the locking portions 47, 47 bite into the lower surfaces of the locking receiving portions 35, 35. That is, with the rotation of the emblem 21,
The engagement ribs 48, 48 push up the lower surfaces of the locking receiving portions 35, 35 to elastically deform the locking receiving portions 35, 35 of the soft cover body 20 to form grooves, and to form the grooves. The locking receiving portions 35 are drawn in the center direction (the direction of arrow B shown in FIG. 3). In this manner, the so-called "escape" in which the locking receiving portions 35, 35 are deformed in the radial direction is prevented, and the locking receiving portions 35, 35 are prevented from being deformed.
The emblem 21 is securely attached to the covering portion 22 by ensuring a sufficient overlapping area (lap) between the 35 and the locking portions 47, 47 and firmly sandwiching the emblem.

When the emblem 21 is attached to the covering portion 22, the lower surface of the emblem 21 is substantially flush with the back surface of the covering portion 22 and does not protrude downward, that is, the portion where the airbag is folded and stored. The airbag is not affected before and after the airbag is deployed.

When an automobile collides, the igniter of the inflator is first activated by a signal from a collision diagnosis unit (not shown), and the charged propellant is burned to form a peripheral surface of the inflator. Nitrogen gas or the like is rapidly injected into the inside of the airbag from the gas injection port, and the folded airbag expands rapidly. Then, due to the pressure of the inflation of the airbag, the cover body
The covering portion 22 is pressed from the inside, and the covering portion 22 is torn along the tear line 24 to form a pair of front and rear door pieces 25a and 25b. And further, when the airbag inflates,
While the emblem 21 is held by the front door piece 25a, the door pieces 25a and 25b are deployed back and forth to form a protruding opening of the airbag. It expands and deploys between the steering wheel body and reduces the impact applied to the occupant.

According to the present embodiment, an emblem 21 made of a different material from the covering portion 22 is attached to the covering portion 22 of the cover body 20 that covers the airbag. As compared with the configuration in which the decorative portion is integrally formed, the decorative effect can be enhanced, and the decorativeness in the vehicle interior can be enhanced.

In addition, the emblem 21 itself has a simple structure, and it is not necessary to use a separate member for attaching the emblem 21 to the covering portion 22, and the emblem 21 can be firmly attached. Can be realized, and the manufacturing cost can be reduced.

Further, on the upper surfaces of the locking portions 47, 47 of the emblem 21, the inclined engagements which bite into the lower surfaces of the locking receiving portions 35, 35 and inwardly engage with the rotation of the emblem 21 toward the upper side. Since the ribs 48, 48 protrude, the lock receiving parts 35, 35
The emblem 21 can be securely attached to the covering portion 22 by firmly sandwiching the emblem 21 between the 47, 47 and the decorative portion main body 41.

In the above embodiment, the emblem
Emblem 21 is used to maintain the engagement between
Although the inclined engagement ribs 48, 48 are provided on the upper surfaces of the locking portions 47, 47, such engagement ribs 48, 48 may be provided, for example, on the lower surface of the decorative portion main body 41. Further, it can be provided on the lock receiving portions 35 of the covering portion 22 and the like. For example, unlike the second embodiment shown in FIG. 5, opposed engaging projections 51, 51 are respectively provided on the lower surfaces of the engagement receiving portions 35, 35 without providing the engagement ribs. be able to. In this configuration, when the emblem 21 inserted into the insertion portion 32 is rotated in the direction A in the drawing, the locking portions 47, 47 elastically deform the inclined surface portion 51a formed on the locking projection 51. When it gets over, it is stopped and held while being sandwiched between the opposing locking projections 51, 51.

In each of the above embodiments, the insertion portion 32
By rotating the emblem 21 inserted into the, it was locked to the covering portion 22, but may be locked to the covering portion by moving the emblem other than rotation, for example, in a linear direction,
In addition, one or both of the covering portion and the emblem may be elastically deformed and locked, and the locking may be held by using another member.

For example, as in the third embodiment shown in FIGS. 6 and 7, the covering portion 22 of the cover main body 20 includes a rear concave portion 61 formed on the rear surface side and a rear concave portion 61 formed on the rear surface side. A surface recess (not shown) located on the front side is formed, and a plurality of substantially fan-shaped insertion portions 63 are formed on the outer periphery of the rear recess 61 so as to penetrate from the front side to the back side. Further, an engagement receiving portion 64 is formed on the outer peripheral portion of each insertion portion 63 and is a stepped portion substantially flush with the rear recess 61. On the other hand, in the emblem 66, a substantially disc-shaped decorative portion main body 67 and a plurality of engaging portions 68 projecting from the lower surface of the decorative portion main body 67 are integrally formed of resin or the like. Each of the engaging portions 68 has a hanging portion 69 through which the inserting portion 63 is inserted, and an engaging portion having a planar shape complementary to the inserting portion 63 and projected radially outward from the lower end of the hanging portion 69, that is, radially. The stopper portion 70 is formed, and a stopper groove 71 which is concentric and substantially arc-shaped is formed in the inner peripheral portion.

Therefore, in this configuration, the insertion portion of the covering portion 22
When each engaging portion 68 is inserted from above into the insertion portion 63 while elastically deforming the engaging portion 68 of the vicinity of 63 or the emblem 66,
The decorative portion main body 67 fits into the concave surface portion, and the locking portions 70 engage with the locking receiving portions 64, respectively, and the emblem 66 is firmly engaged and held by the covering portion 22. Furthermore, in this state,
An annular ring 72 as a deformation preventing device made of a spring steel material is fitted from the back surface side into the back surface concave portion 61, and is engaged with the stopper groove 71 of each engaging portion 68 to elastically press the outer peripheral side. By doing so, the engagement of the engagement portion 70 with the engagement receiving portion 64 of the engagement portion 70 is reliably held.

Further, for example, as in the fourth embodiment shown in FIGS. 8 and 9, the cover portion 22 of the cover body 20 is formed with a surface recess 80 on the front surface side.
An annular groove 81 is formed along the back surface of the outer periphery of the groove 81, and a plurality of substantially fan-shaped insertion portions 83 are formed to penetrate from the front surface to the back surface along the inner periphery of the groove 81. Further, an engagement receiving portion 84 that is a stepped portion that is recessed toward the front surface and located at the inner peripheral portion of each insertion portion 83 can be formed. In this case, in the emblem 86, a substantially disc-shaped decorative portion main body 87 and a plurality of engaging portions 88 protruding from the lower surface of the decorative portion main body 87 are formed integrally with a resin or the like. The joining portion 88 has a hanging portion 89 through which the inserting portion 83 is inserted, and the hanging portion 89
A stopper groove 91 that protrudes from the lower end of 89 to the outer peripheral side, forms a locking portion 90 having a planar shape complementary to the insertion portion 83, and has a substantially arc-shaped stopper groove 91 that is concentric with the outer peripheral portion. Form.

Therefore, in this configuration, the insertion portion of the covering portion 22
When each engaging portion 88 is inserted into the insertion portion 83 from above while elastically deforming the engaging portion 88 near the 83 or the emblem 86,
The decorative portion main body 87 fits into the concave surface portion 80, and the respective locking portions 90 respectively engage with the locking receiving portions 84, so that the emblem 86 is firmly engaged and held by the covering portion 22. Further, in this state, an annular ring 92 as one deformation preventing device made of a spring steel material is fitted into the groove portion 81 from the back surface side, and each engaging portion is
By engaging with the stopper groove 91 of 88 and elastically pressing to the inner peripheral side, the locking portion 90 of each engaging portion 88 is securely locked.
It is designed to be locked at 84.

The emblem can have various shapes and materials. For example, the shape may be a disk, an ellipsoid, a triangle formed of smooth corners, a quadrangle, a rhombus, a pentagon, a polygonal shape having a hexagon or more, or an irregular shape such as a cloud shape. The material is aluminum alloy, titanium alloy, metal plate such as stainless steel, polycarbonate, various nylon resins, ABS
Resins, various elastomer resins, various elastomer-modified resins, resins such as unsaturated polyester, sliced wood pieces backed with aluminum alloy, above-mentioned various resins adhered to film, or above-mentioned various resins, wood grain Printed pattern such as pattern, marble pattern, carbon composite pattern, and also glued foil such as gold leaf,
Further, a metalized product or the like can be used.

In each of the above embodiments, the airbag device mounted on the steering wheel body has been described. However, the shape and the mounting position of the airbag device are not limited to those described above. It can be applied to a built-in airbag device for passengers in the passenger seat, a built-in airbag device for the rear seats in the front seat back, or an airbag device installed next to the door or seat for side collision. it can.

[0042]

According to the cover body of the airbag device according to the first aspect of the present invention, the decorative member formed separately from the covering portion is used.
The decoration effect can be easily increased. Further, the lock receiving portion of the covering portion is sandwiched between the decorative portion main body and the locking portion, so that the decorative member can be firmly attached to the covering portion. Therefore, it is not necessary to insert-mold the decorative member on the covering portion, so that the manufacturing process can be simplified and the manufacturing cost can be reduced. Furthermore, since there is no need to plastically deform the decorative member and the material of the decorative member is not limited, the decorative effect can be easily enhanced.

According to the cover body of the airbag device of the second aspect, in addition to the effect of the first aspect, the decorative member can be attached to the covering portion only by inserting and rotating the decorative member in a predetermined direction. It can be simplified and the manufacturing cost can be reduced.

According to the cover body of the airbag device of the third aspect, in addition to the effect of the second aspect, when the decorative member is rotated, the inclined portion presses against the member on the other side, and the decorative member is pressed. It can be firmly fixed to the covering part.

According to the cover body of the airbag device of the fourth aspect, in addition to the effect of the first aspect, the locking member of the decorative member is inserted into the insertion portion while being elastically displaced, and the locking member is received. Since the decorative member can be attached to the covering part by locking to the part and preventing the deflection of the locking part by engaging the deformation preventing tool with the locking part, the manufacturing process is simplified and the manufacturing cost is reduced. can do.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a cover body of an airbag device of the present invention.

FIG. 2 is a perspective view of the airbag device.

FIG. 3 is a cross-sectional view of a part of the airbag device.

FIG. 4 is a perspective view of the decorative member with a part cut away.

FIG. 5 is a partial perspective view showing a second embodiment of the present invention.

FIG. 6 is a partial perspective view showing a third embodiment of the present invention.

FIG. 7 is a partially exploded perspective view showing the third embodiment.

FIG. 8 is a partial exploded perspective view showing a fourth embodiment of the present invention.

FIG. 9 is a partial cross-sectional view showing the fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airbag device 12 Cover body 21, 66, 86 Emblem as decoration member 22 Covering part 32 Insertion part 35, 64, 84 Lock receiving part 37, 63, 83 Insertion part 41, 67, 87 Decoration part main body 47, 70 , 90 Locking part 48 Engaging rib 72,92 As an inclined part Annular ring as deformation prevention device

Claims (4)

[Claims] 1. An airbag, comprising: a covering portion that is deployed when the airbag is deployed; and a decorative member attached to the covering portion. The decorative member has a decorative part main body abutting on a front surface side of a lock receiving part, and the decorative member is inserted into the insert part, and is locked on a back side of the lock receiving part. A cover body of the airbag device, comprising: 2. The insertion portion of the covering portion includes a lock receiving portion protruding from the outer peripheral side toward the inner peripheral side, and an insertion portion adjacent to the lock receiving portion. The locking portion is inserted through the insertion portion, and is rotated in a direction having the insertion direction as an axial direction, and is locked on a back surface side of the locking receiving portion. Cover body of the airbag device. 3. An inclined portion formed on at least one of the decorative member and the covering portion along a circumferential direction in which the decorative member rotates, and a height dimension toward at least the other of the decorative member and the covering portion gradually increases. The cover body of the airbag device according to claim 2, wherein a cover is formed. 4. A deformation preventing device for engaging with a locking portion of the decorative member, an insertion portion of the covering portion is provided with an insertion portion adjacent to the locking receiving portion, and the locking portion of the decorative member is The cover body for an airbag device according to claim 1, wherein the insertion portion is inserted while being elastically displaced, and the deformation preventing device is engaged to prevent the displacement.