JPH0911833A - Cover body of air bag device - Google Patents

Abstract

PURPOSE: To enhance decorativeness by providing an engaging body having inserting parts which are arranged on the reverse side of a covering part and into which locking parts of leg parts can be inserted and a slipping-out preventive part having holding groove parts which continue with these inserting parts and into which shaft parts of the leg parts are inserted and the locking parts of the leg parts are not inserted. CONSTITUTION: A decorative body 33 is fitted in an annular recessed part 28a of a decorative part installing part 28 of a cover main body 21 from the obverse side, and a plate 34 is arranged in a prescribed position on the reverse side of the cover main body 21, and shafts 35 are respectively inserted into respective through holes 33a of the decorative body 33 from the obverse side, and locking parts 35e of tip parts of these respective shafts 35 are respectively inserted into inserting parts 36a of the plate 34. In this condition, this plate 34 is rotated in the arrow A direction by using a jig to engage with installing holes 37 of the plate 34. Shaft parts 35b of the respective shafts 35 are inserted into holding groove parts 36b, and the locking parts 35e are engaged with and locked on edge parts on both sides of these holding groove parts 36b, and slipping-out of the respective shafts 35 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover body for an airbag device to which decorative parts are attached.

[0002]

2. Description of the Related Art Conventionally, an automobile steering wheel or the like has been provided with an airbag device including an inflator for injecting gas, an airbag for inflating and expanding by the gas, and a cover body for covering the airbag. . The airbag is housed inside the cover body in a small folded state, and is inflated by the pressure of the gas injected from the inflator in the event of a collision of an automobile or the like, thereby covering the cover body made of a soft resin. The part is cleaved and inflated and deployed to the front of the occupant to protect the occupant from the impact of a collision. In addition, this airbag device is incorporated in a pad body at the center of a steering wheel in order to protect a driver of a vehicle from the impact of a collision, and an airbag for a passenger in a passenger seat incorporated in an instrument panel. Various types of devices have been developed and put into practical use, such as a device, an airbag device for a rear seat built in a seat back of a front seat, or an airbag device provided on a door or a side of a seat for a side collision. ing.

In this type of airbag device,
For the purpose of decoration, decoration mark such as logo mark or car name,
2. Description of the Related Art There is known a configuration in which an airbag device is formed integrally with a cover portion of a cover body.

However, in the structure in which the decorative mark is formed integrally with the cover body, the decorative mark has the same texture and color tone of the entire cover body, and therefore, there is a problem that it is not noticeable and the decorative effect is poor. .

Further, when such a decorative mark is constituted by a decorative part which is separate from the covering portion of the cover body,
It is necessary to firmly attach the decorative component to the soft resin covering portion that deploys at high speed when the airbag device operates.

In this respect, for example, the structure described in Japanese Utility Model Laid-Open No. 2-66353 is known. In this structure, a plate of a separate member serving as a decoration mark is attached to the surface of the cover portion of the cover body, and the hook portion of the locking portion protruding from the plate is engaged with the reinforcing net embedded in the cover portion. Then
The plate is attached to the cover of the cover body.

However, this actual Kaihei 2-66353
The configuration described in the publication can be applied only to the cover body in which the reinforcing net is integrally embedded in the covering portion, and has a problem that the applicable range is narrow.

Further, for example, the structure described in Japanese Patent Laid-Open No. 5-139231 is known. In this configuration, a part of a decorative component which is a separate member is embedded and fixed in the covering portion of the cover body. In this decorative component, the decorative portion exposed on the surface side of the covering portion and the periphery of the decorative portion are provided. And a base portion formed on the. Then, a plurality of through holes are formed in the base portion, and by insert molding so that the base portion is embedded in the covering portion,
The decorative mark can be securely attached to the cover.

However, this Japanese Patent Laid-Open No. 13923/1993
In the configuration described in Japanese Patent No. 1, since the decorative component is insert-molded in the covering portion of the cover body, there is a problem that the positioning process and the finishing process of the decorative component are complicated. That is, in general, when insert molding is performed in injection reaction molding of polyurethane, a step of applying at least one kind of a coating agent and a mold release agent to the cavity surface of the mold is required, and the decorative part is preliminarily placed in the mold. Since the decorative part of this decorative part is soiled by a coating agent or the like, it is necessary to remove the stain on the decorative part by finishing after molding. Further, when the surface of the decorative portion and the surface of the mold are not in airtight contact with each other during molding, the polyurethane resin enters the space formed between the surface of the decorative portion and the surface of the mold. . Then, since the decorative portion is covered with a thin film of polyurethane resin, this film needs to be removed in a later step, and there is a problem that the number of working steps increases and the variation in the finish of the appearance increases. . Even when a thermoplastic resin is used instead of polyurethane resin, when insert molding is performed, burrs, etc. are generated at the boundary (partition line) between the peripheral edge of the decorative component and the cover body, and this is removed. Therefore, there is a problem that the number of work steps increases and the variation in the finish of the appearance increases.

[0010]

As described above, in the structure in which the decorative mark is formed integrally with the cover body, the decorative mark has the same texture and color tone as the entire cover body, so that the decorative mark is less noticeable and has a decorative effect. Have the problem of being scarce. Further, the decorative mark is a plate separate from the covering portion, and the reinforcing net embedded in the covering portion of the cover body is engaged with the hook portion of the locking portion projecting from the plate, so that the plate becomes the cover body. In the structure of attachment, it can be applied only to the cover body in which the reinforcing net is integrally embedded in the covering portion, and there is a problem that the applicable range is narrow. In addition, in the configuration in which the decorative component of a separate member is insert-molded on the cover body, the decorative component is easily soiled and burrs are generated, so that it is difficult to improve the appearance, and the work of removing the stains and burrs is complicated. Have a problem.

The present invention has been made in view of the above points, and an object of the present invention is to provide a cover body for an airbag device which has a high decorative effect and can be easily manufactured.

[0012]

According to a first aspect of the present invention, there is provided a cover body for an airbag device, comprising: a covering portion for covering the airbag; and a decorative component attached to the covering portion, the decorative component being the aforementioned one. A decorative body arranged on the surface side of the covering portion, and a protruding portion provided from the decorative body, a shaft portion and a locking portion having a larger diameter dimension than the shaft portion are provided, and a leg portion penetrating the covering portion, An insertion portion that is arranged on the back surface side of the covering portion and through which the locking portion of the leg portion can be inserted, and a shaft portion of the leg portion that is continuous with the insertion portion and that is also the locking portion of the leg portion. And an engaging body provided with a retaining portion provided with a holding groove portion that does not pass through.

A cover body for an airbag apparatus according to a second aspect of the present invention includes a covering portion for covering the airbag and a decorative component attached to the covering portion, and the decorative component is provided on a surface side of the covering portion. The arranged decorative body, the leg portion projecting from the decorative body and penetrating the covering portion, and the retaining portion arranged on the back surface side of the covering portion and engaging with the leg portion to prevent the detachment are provided. And an engaging body.

[0014]

In the cover body of the airbag apparatus according to the first aspect of the present invention, by attaching a decorative body which is a member different from the cover portion to the surface side of the cover portion of the cover body which covers the airbag,
The decorative effect is enhanced as compared with the configuration in which the decorative portion is formed integrally with the covering portion. Then, insert the locking portion of the leg portion that penetrates the covering portion into the insertion portion of the retaining portion of the engagement body, move the engagement body with respect to this leg portion, and insert the shaft portion into the holding groove portion. As a result, the locking portion is engaged with the edge portion of the holding groove portion,
The legs prevent the engagement body from coming off. In this state, the covering part is sandwiched between the decorative body and the engaging body, and the decorative component is easily and surely attached to the covering part. Further, it is not necessary to perform insert molding, and the decorative body is not contaminated during the molding process.

According to a second aspect of the present invention, in the cover body of the airbag device, the cover body for covering the airbag is provided with a covering portion on the front surface side.
By attaching a decorative body that is a separate member from the covering portion, the decorative effect can be enhanced as compared with a configuration in which the decorative portion is formed integrally with the covering portion. Then, the ornamental body has a leg portion protruding from the ornamental body that penetrates through the covering portion, and the retaining portion is engaged with the leg portion to dispose the engaging body on the back surface side of the covering portion. The covering portion is sandwiched between the body and the engaging body,
The decorative part can be easily and surely attached to the covering portion. Further, it is not necessary to perform insert molding, and the decorative body is not contaminated during the molding process.

[0016]

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

In FIG. 2, reference numeral 1 denotes a steering wheel of an automobile. The steering wheel 1 includes a steering wheel main body 2 and an airbag device 3 mounted on the upper side of the steering wheel main body 2 on the occupant side. Have been.

The steering wheel body 2 is
An annular rim portion (ring portion) 5 which is a grip steering portion, a boss portion 6 located inside the rim portion 5, and these rim portions 5
And four spokes 7 connecting the bosses 6. A boss fitted to a steering shaft (not shown) is arranged below the steering wheel body 2 on the vehicle body side, and a boss plate is fixed to the boss by welding or the like. Also,
The core of the spoke 7 is connected to this boss plate,
The core metal of the rim portion 5 is connected to the core metal of the spoke portion 7. A skin portion 8 made of a soft synthetic resin or the like is formed on an outer peripheral portion of the core metal of the rim portion 5 and an outer peripheral portion of the spoke portion 7 on the rim portion 5 side of the core metal.

Further, as shown in FIGS. 1 to 4, the airbag device 3 is provided with a metal base plate 11, which is attached to the boss plate of the steering wheel body 2 via a bracket or the like. There is. The base plate 11 is formed with an upper plate portion 11a having a substantially rectangular shape in plan view and a peripheral wall portion 11b bent downward from a peripheral edge portion of the upper plate portion 11a. A circular hole-shaped inflator mounting hole 11c and a plurality of mounting through holes 11d located around the inflator mounting hole 11c are formed in the 11a. Then, an inflator 12 for injecting gas is fitted into the inflator mounting hole 11c from below. Further, an airbag 14 is attached to the upper surface of the upper plate portion 11a in a small folded state so as to cover the upper side of the inflator 12.

The inflator 12 is provided with a substantially cylindrical main body portion 12a, and a plurality of gas injection ports 12b are formed at predetermined intervals on the outer peripheral portion of the gas discharge portion on the upper side of the main body portion 12a. There is. Further, a flange portion 12c is provided on the outer periphery of the main body portion 12a, and a plurality of attachment through holes 12d are formed in the flange portion 12c.

The airbag 14 is provided with an inflator
The outer edge portions of the lower cloth material having an annular shape having an opening 14a through which the 12 gas discharge portions are inserted and the upper cloth material having a circular shape with the same outer diameter dimension as the lower cloth material are sewn together. Then, it is formed in a bag shape. In addition, as shown in FIG.
The peripheral edge of a is reinforced by overlapping and stitching cloth materials, and is located around this opening 14a,
A plurality of mounting through holes 14b are formed.

Inside the airbag 14, an annular retainer 16 for pressing the opening 14a of the airbag 14 is inserted. Then, the plurality of bolts 17 attached to the retainer 16 are respectively attached to the attachment through holes 14b of the airbag 14.
And the mounting through hole 11d of the upper plate portion 11a of the base plate 11,
The airbag 14 is integrally fastened and fixed to the base plate 11 together with the inflator 12 by sequentially inserting the same into the mounting through hole 12d of the inflator 12 and screwing the nut 18 from the lower surface of the flange portion 12c.

Further, peripheral wall portions on both sides of the base plate 11
Each of the 11b has a bracket portion 11e attached to the boss plate.

Then, as shown in FIGS. 1 to 4, a cover body 21 is attached to the base plate 11 so as to cover the folded airbag 14. The cover body 21 is integrally formed by an injection molding method using a synthetic resin such as a thermoplastic elastomer, and a covering portion 22 that covers a part of the boss portion 6 and the spoke portion 7 in which the airbag 14 is housed. The covering portion 22 has a mounting wall portion 23 formed in a substantially rectangular tube shape and protruding downward from the back surface of the covering portion 22.

The cover body 21 is attached to the mounting wall 23.
Is fitted to the outside of the peripheral wall portion 11b of the base plate 11, the rivet 26 is inserted into the through holes 23a and 11f formed in the mounting wall portion 23 and the peripheral wall portion 11b, respectively, and the mounting wall portion 11b is caulked. The portion 23 is the peripheral wall portion 11b of the base plate 11.
It is stuck to.

Further, as shown in FIGS. 1 to 5, a decorative component mounting portion is provided at a substantially central portion of the covering portion 22 of the cover body 21.
28 is integrally formed, and the decorative component 31 is attached to the decorative component mounting portion 28.

The decorative component mounting portion 28 is formed with an annular recess 28a in which the front surface side of the covering portion 22 is annularly recessed, and a through hole 28b communicating from the annular recess 28a to the rear surface side. Are provided at predetermined intervals. Further, it is located on the back side of the annular recess 28a and
28c is formed. Further, the inner peripheral side portion and the outer peripheral side portion of the back side annular concave portion 28c of the covering portion 22 are each smoothly projected toward the back side.

The decorative component 31 is composed of an annular plate-shaped decorative body 33, a plate 34 as an engaging body having substantially the same shape as the decorative body 33, and a plurality of shafts 35 forming leg portions. It is configured.

The decorative body 33 is an annular member made of an aluminum alloy whose surface is hairline processed, and is fitted into the annular recess 28a of the decorative component mounting portion 28. Further, the decorative body 33 is formed with through holes 33a corresponding to the respective through holes 28b of the decorative component mounting portion 28. As shown in FIG. 5, the through holes 33a are formed by connecting a front surface side hole portion 33b opening to the front surface side and a back surface side hole portion 33c opening to the back surface side, respectively. Is substantially constant along the axial direction, the diameter of the rear surface side hole 33c is tapered toward the rear surface, and the diameter of the portion opened to the rear surface is the decorative component mounting portion 28. Through holes
It is formed to have almost the same diameter as 28b.

Each shaft 35 has a tapered head portion 35a formed at the base end portion, and a straight portion 35b protruding from the head portion 35a. Then, on the outer peripheral portion near the tip of the straight portion 35b,
An annular groove portion 35c is formed, a shaft portion 35d having a smaller diameter than the other portion of the straight portion 35b is formed, and the tip side of the shaft portion 35d has a diameter larger than that of the shaft portion 35d. It is a stop 35e.

When the shafts 35 are inserted into the through holes 33a of the ornamental body 33 from the front side, the head portion 35a of the shaft 35 is locked in the rear surface side hole portion 33c of the through hole 33a. The surface portion of the portion 35a is flush with the surface portion of the decorative body 33, or is recessed to the back surface side with respect to the surface portion of the decorative body 33. Furthermore, in this state,
The straight portion 35b is inserted through the through hole 33a of the decorative body 33 and the through hole 28b of the decorative component mounting portion 28, and the tip portion thereof is the cover body 2.
It is exposed on the back side of 1.

On the other hand, the plate 34, as shown in FIG. 1, FIG. 6 and FIG. The plate 34 is provided with a plurality of engaging holes 36 as retaining portions at a predetermined interval, and in this embodiment, six engaging holes 36 are formed in accordance with the number of the shafts 35, and a circular hole-like mounting is provided. A plurality of holes 37, three in this embodiment, are formed. In addition, each engaging hole 36 has a circular hole-shaped insertion portion 36a corresponding to the through hole 28b of the decorative component mounting portion 28.
And a holding groove portion 36b extending in an arc shape in the circumferential direction from the insertion portion 36a. And this holding groove
The width dimension of 36b is smaller than the diameter dimension of the insertion portion 36a, and the shaft portion 35d of the shaft 35 can be inserted into both the insertion portion 36a and the holding groove portion 36b, while the engagement portion of the shaft 35 can be inserted. The stopper portion 35e can be inserted through the insertion portion 36a, but cannot be inserted through the holding groove portion 36b, and is locked to the edge portion of the holding groove portion 36b so as to be prevented from coming off. Furthermore, the insertion portion 36a is provided at the middle portion in the longitudinal direction of the holding groove portion 36b.
A pair of locking projections 36c on both sides are located in the vicinity of and are provided on the back surface side by pressing or the like.

Therefore, in order to attach the decorative component 31 to the covering portion 22 of the cover body 21, first, the decorative body 33 is fitted from the surface side into the annular recess 28a of the decorative component attaching portion 28 of the cover body 21, and then the cover body 21. While arranging the plate 34 at a predetermined position on the back side of the shaft, the shafts 35 are inserted into the through holes 33a of the decorative body 33 from the front side, and the locking portions 35e at the tip end of these shafts 35 are respectively inserted. Insertion part 36 of plate 34
Insert into a. Then, in this state, using a jig that engages with the mounting hole 37 of the plate 34,
And it is rotated in the direction of arrow A shown in FIG. Then, the shaft portion 35d of each shaft 35 is inserted into the holding groove portion 36b, and the locking portions 35e are engaged and locked to the edge portions on both sides of the holding groove portion 36b to prevent the shafts 35 from coming off. . Further, in a state in which the locking portion 35e of each shaft 35 rides over the locking projection 36c, rotation of the plate 34 in the opposite direction is suppressed, and each shaft 35 is more reliably prevented from coming off. Then, at this time, the cover portion 22 of the cover body 21 is sandwiched between the decorative body 33 and the plate 34, the decorative component 31 is securely held by the cover portion 22, and a cover formed of an elastic elastomer. When the covering portion 22 of the main body 21 is slightly compressed and deformed, the elastic force of the returning deformation of the covering portion 22 presses the plate 34 against the locking portion 35e of each shaft 35, and the plate 34 is rotated in the rotation direction of the plate 34. It is possible to prevent the slippage.

Further, as shown in FIGS. 2 and 5, a tear line 38, which is weaker than other portions of the covering portion 22, is provided on the back surface side of the covering portion 22 of the cover body 21. And this tear line 38 is a central break line extending in both directions.
38a and a pair of side break lines 38b connected to the central break line 38a and extending in the front-rear direction in the vicinity of both sides of the covering portion 22.
And is formed in a substantially H-shaped plane. Further, the central rupture line 38a is formed so as to pass through the annular recess 28a of the covering portion 22 at a predetermined distance and bypass the annular recess 28a in the vicinity of the annular recess 28a in a substantially V-shaped plane. In addition to the plane V-shape, the central break line 38a should be formed in a straight line, a gently curved line, or a U-shaped plane that bypasses the decorative component 31 in various shapes. You can

In the airbag device 3, when the vehicle collides, the igniter of the inflator 12 is activated by a signal from a collision diagnosis unit (not shown), and the filled propellant is burned to inflate the inflator. 12
Nitrogen gas or the like is rapidly injected into the inside of the airbag 14 from the gas injection port 12b formed on the peripheral surface of the airbag, and the folded airbag 14 is rapidly inflated. Then, this airbag
14, due to the pressure of this expansion, the tear line 38 is broken from the central portion of the central break line 38a, the covering portion 22 of the cover body 21 is split along the tear line 38, and a pair of front and rear door pieces is formed. . Further, when the airbag 14 is inflated, the decorative parts 31 are held in the front door piece, and these door pieces are deployed forward and backward to form a protruding port of the airbag 14, and through the protruding port. The airbag 14 is projected and inflated and deployed to the front side of the occupant.

According to this embodiment, the airbag 14
Compared with a configuration in which the decorative portion is formed integrally with the cover portion 22 by attaching a metal decorative body 33 that is a member different from the cover portion 22 to the front surface side of the resin cover portion 22 of the cover body that covers As a result, the decorative effect can be enhanced, and the decorativeness of the vehicle interior can be enhanced. In addition, since the shafts 35 are arranged at a predetermined interval along the circumferential direction of the decorative body 33, it is possible to give a fine mechanical impression to those who see the airbag device 3, and at the same time, soft and large swing. The steering wheel 1 provided with the airbag device 3, which tends to give a monotonous impression, can be made to look neat.

Further, in the decorative body 33, the shaft 35 protruding from the decorative body 33 side is inserted into the through hole 28b of the covering portion 22,
Plate the tip side of this shaft 35 with the back side of the coating 22.
By fixing to the 34, the covering portion 22 can be sandwiched between the decorative body 33 and the plate 34, and the decorative component 31 can be reliably fixed.

Further, the decorative body 33 and the plate 34 each have a plate shape of the same shape that abuts the covering portion 22 in a planar manner, and the covering portion 22 is elastically sandwiched between the decorative body 33 and the plate 34. By doing so, the decorative component 31 can be reliably attached to the covering portion 22.

Then, as described above, the decorative part 31 is covered with the covering portion.
Since it can be securely attached to the 22, the airbag device 3 operates, and even when the cover portion 22 is torn and the door piece is deployed at high speed, the decorative component 31 can be securely held on the front door piece, The airbag 14 can be smoothly inflated and deployed.

Further, in the plurality of shafts 35, the locking portion 35e at the tip is inserted into the insertion portion 36a of the plate 34, and the plate 34 is rotated to lock the locking portion 35e in the holding groove portion 36b. Since it can be prevented from coming off collectively by a series of operations, the manufacturing process can be simplified, workability is improved, and the decorative component 31 can be easily attached to the covering portion 22.

Further, since the plate 34 is integrally provided with the engaging hole 36 which engages with the shaft 35 and prevents the shaft 35 from coming off, a decorative component is provided.
The number of parts 31 can be reduced, the process of attaching the decorative part 31 can be further simplified, and the workability can be improved.

Furthermore, a simple operation is performed on the decorative component 31 for the non-defective process of the covering portion 22 of the cover main body 21 which has been completed by injection molding and, if necessary, removal of gate marks and the like, and through processes such as coating. Since it is possible to attach the decorative component 31 to the covering portion 22, it is not necessary to perform insert molding or the like. Therefore, in the molding process, burrs are not generated or soiled at the boundary with the decorative body 33, so that the manufacturing process can be simplified, workability can be improved, appearance can be improved, and process yield can be improved. Can be good.

Since the decorative part 31 is attached by sandwiching the covering portion 22 from the front surface side and the back surface side, the covering portion 22 is attached.
It can be securely fixed regardless of the shape of 22, and it can improve versatility.

In the above embodiment, the plate 34 is provided with six engaging holes 36 of the same shape each having an insertion portion 36a, a holding groove portion 36b, and a locking projection 36c for preventing rotation. Although formed, for example, like the plate 41 shown in FIG. 8, the engagement holes 36 having no locking projections 36c are formed at predetermined intervals.
It is also possible to form the engaging portions 42 between the engaging holes 36 and to engage with the shaft portion 35d of the shaft 35 by using spring steel material or the like in addition to being formed in places. And this engaging part
Reference numeral 42 is a so-called E-shaped retaining ring, which is adapted to elastically engage the shaft portion 35d of the shaft 35 by rotating the plate 41 in the direction of arrow A to prevent the plate 34 from rotating.

Further, in each of the above embodiments, the plate 3
By rotating 4, 41 in the specified direction, the shaft 35
Although the retaining groove 36b of the engaging hole 36 and the engaging direction of the engaging portion 42 are formed in the same direction, for example, as in the plate 44 shown in FIG. Plate 44
By moving in the direction of arrow B, the shaft 35 is locked in the holding groove portion 36b of the engaging hole 36 to prevent the shaft from coming off, and the shaft 35 is engaged with the engaging portion 42 to move in the opposite direction. Can be suppressed.

Further, as shown in FIGS.
It is also possible to form so-called flat push nuts 52 at predetermined intervals in the circumferential direction on the plate 51 formed of spring steel or the like. This flat push nut 52 has a plurality of elastically deformable engaging pieces 52b protruding toward the rear surface side toward the through hole 52a through which the shaft is inserted. By inserting the shaft into the hole 52a, irregularities such as a thread groove formed on the shaft are engaged with the engaging pieces 52b to prevent the shaft from coming off. Further, according to the embodiment shown in FIGS. 10 to 12, the shaft can be prevented from coming off only by pushing the plate 51 in one direction, for example.
Workability can be improved.

In the above embodiment, the ornamental body 33 of the ornamental part 31 is formed in an annular shape from an aluminum alloy having a hairline surface, but other materials or other shapes may be adopted. . 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.

Further, in each of the above-mentioned embodiments, the airbag device 3 mounted on the steering wheel main body 2 has been described, but the shape and mounting position of the airbag device are not limited to those described above, and for example, an instrument panel. Applicable to passenger side passenger airbag devices built into the passenger compartment, rear seat airbag devices built into the front seat back, or airbag devices installed at the side of a door or side seats for side collisions. You can

[0049]

According to the cover body of the airbag apparatus of the first aspect, the cover body is covered by attaching a decorative body, which is a member different from the cover portion, to the surface side of the cover portion of the cover body that covers the airbag. The decorative effect can be enhanced as compared with the configuration in which the decorative portion is integrally formed on the portion. Then, insert the locking portion of the leg portion that penetrates the covering portion into the insertion portion of the retaining portion of the engagement body, move the engagement body with respect to this leg portion, and insert the shaft portion into the holding groove portion. Thus, the engaging portion can be engaged with the edge portion of the holding groove portion, and the engagement body can be prevented from coming off from the leg portion. Therefore, it is possible to easily and reliably attach the decorative component to the covering portion by sandwiching the covering portion between the decoration body and the engaging body. In addition, since the engagement body is provided with the retaining portion that engages with the leg portion, the manufacturing process can be simplified and the manufacturing cost can be reduced as compared with the configuration in which another member is combined and retaining is prevented. And since it is not necessary to perform insert molding and the decorative body does not get dirty in the molding process,
The appearance can be improved and the manufacturing process can be simplified.

According to the cover body of the airbag device of the second aspect, the cover body is covered with the cover body by covering the airbag body with a decorative body which is a member different from the cover body. Compared with the structure that the decorative part is integrally formed,
The decorative effect can be enhanced. Then, the ornamental body has a leg portion protruding from the ornamental body that penetrates through the covering portion, and the retaining portion is engaged with the leg portion to dispose the engaging body on the back surface side of the covering portion. By sandwiching the covering portion between the body and the engaging body, the decorative component can be easily and surely attached to the covering portion. In addition, since the engagement body is provided with the retaining portion that engages with the leg portion, the manufacturing process can be simplified and the manufacturing cost can be reduced as compared with the configuration in which another member is combined and retaining is prevented. Further, since it is not necessary to perform insert molding and the decorative body is not contaminated in the molding process, the appearance can be improved and the manufacturing process can be simplified.

[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 plan view of a steering wheel provided with the airbag device.

FIG. 3 is a perspective view of the above airbag device.

FIG. 4 is a sectional view taken along the line I-I of FIG. 3 of the airbag device.

FIG. 5 is an enlarged sectional view of a part of the same cover body.

FIG. 6 is a plan view of the same plate.

FIG. 7 is a partial cross-sectional view of the same plate.

FIG. 8 is a plan view showing another embodiment of the plate of the present invention.

FIG. 9 is a plan view showing another embodiment of the plate of the present invention.

FIG. 10 is a plan view showing another embodiment of the plate of the present invention.

FIG. 11 is a perspective view of a part of the same plate.

FIG. 12 is a partial cross-sectional view of the same plate.

[Explanation of symbols]

 3 Airbag device 14 Airbag 22 Covering part 31 Decorative part 33 Decorative body 34 Plate as an engaging body 35 Shaft forming a leg 35d Shaft part 35e Engaging part 36 Engaging hole as a retaining part

Claims (2)

[Claims] 1. A covering part for covering an airbag, and a decorative part attached to the covering part, the decorative part comprising a decorative body arranged on a surface side of the covering part, and a decorative body from the decorative body. A leg portion penetrating the covering portion, provided with a shaft portion and a locking portion having a larger diameter dimension than the shaft portion, and a locking portion of the leg portion arranged on the back surface side of the covering portion. And an engaging body provided with a retaining portion provided with a holding groove portion that is continuous with the insertion portion and through which the shaft portion of the leg portion is inserted, and the locking portion of the leg portion is not inserted. A cover body for an airbag device, comprising: 2. A covering part for covering the airbag, and a decorative part attached to the covering part, wherein the decorative part is a decorative body arranged on the surface side of the covering part, and It is characterized in that it is provided with a leg portion projectingly provided and penetrating the covering portion, and an engaging body provided on a back surface side of the covering portion and provided with a retaining portion for engaging with the leg portion and retaining the same. Cover body for airbag device.