JPH09315248A - Cover body on air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heighten the decorative effect of a cover body on an air bag device as well as to unfold an air bag smoothly upon breaking a specified rupture part quickly in time of unfolding this air bag. SOLUTION: An ornament part 31 is attached to a covered part 22 of a cover body 20. This ornament part 31 consists of an emblem 33, a holder 34, and a shaft 35, and it is firmly installed by holding the covered part 22 between. A flange part 38 is formed in the holder 34, and this flange part 38 is inserted into a tear line 24. In time of unfoldment of this air bag, the flange part 38 comes into contact with this tear line 24, guiding a rupture of this line 24.

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 that covers an airbag that is inflated and deployed.

[0002]

2. Description of the Related Art Conventionally, in an automobile steering wheel or the like, an airbag device including an inflator for injecting gas, an airbag inflated and deployed by the gas, and a cover body covering the airbag has been used. . 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 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 configuration in which the decorative mark is formed integrally with the cover body, the decorative mark becomes the same as the texture and color tone of the entire cover body, so that it is less noticeable,
There is a problem that the decorative effect is poor.

In this respect, for example, as disclosed in Japanese Utility Model Laid-Open No. 2-66353 or Japanese Patent Laid-Open No. 5-139231, there is known a structure in which a separately formed decorative component is attached to a cover portion of a cover body. Has been. However, in a configuration in which a separate decorative component is attached, it is necessary to firmly attach the decorative component to the soft resin covering portion that deploys at high speed when the airbag device is activated, and the decorative component is not covered by the cover body. It is necessary not to affect the cleavage of the covering portion, and it is difficult to reduce the manufacturing cost and the design is limited.

[0005]

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. In addition, in the configuration in which the separately formed decorative component is attached to the cover portion of the cover body, it is necessary to firmly attach the decorative component to the soft resin cover portion that deploys at high speed when the airbag device operates. At the same time, it is necessary to prevent the decorative component from affecting the cleavage of the covering portion of the cover body, which limits the design and makes it difficult to reduce the manufacturing cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cover body for an airbag device, which has a high decorative effect, allows the airbag to deploy smoothly, and reduces the manufacturing cost. To do.

[0007]

According to a first aspect of the present invention, there is provided a cover body for an air bag device, which covers the air bag and has a break portion which is broken when the air bag is deployed, and a cover portion attached to the cover portion. And a decorative body disposed on the surface side of the covering portion,
A holding body arranged on the back surface side of the covering portion and a connecting body that connects the decorative body and the holding body are provided, and the holding body is provided with a fracture guiding portion facing the breaking portion of the covering portion. It has been done.

In this structure, the cover is sandwiched between the decorative body and the holder, which are connected to each other by the connecting body, and the decorative component is firmly attached to the cover. Also,
When the airbag is deployed, the rupture guide portion provided on the holding body so as to face the rupture portion abuts the rupture portion to induce the rupture of the rupture portion, and the airbag is smoothly deployed.

According to a second aspect of the present invention, there is provided a cover body for an airbag apparatus according to the first aspect, wherein the breaking portion is formed in a groove shape opening to the rear surface side of the covering portion, and the breaking guiding portion. Is formed in the shape of a ridge to be inserted into this fractured portion.

In this structure, the covering portion is smoothly broken along the breaking portion with a simple structure.

According to a third aspect of the present invention, there is provided a cover body for an airbag apparatus according to the first or second aspect, wherein the fracture guide portion is provided with a protrusion portion that protrudes toward the fracture portion. It is a thing.

Further, in this configuration, the break start position of the break is set by the protrusion.

According to a fourth aspect of the present invention, there is provided a cover body for an airbag apparatus according to any one of the first to third aspects, wherein the cover body is in contact with a holding body on the back side of the covering portion. An elastically deformable support protrusion for supporting the is provided.

Further, in this structure, since the holding body located on the back surface side of the covering portion is supported by being brought into contact with the elastically deformable support protrusion, the covering portion and the holding body are brought into planar contact with each other. It is possible to reduce the requirement for accuracy. Also,
When the airbag is deployed, the supporting projection is elastically deformed and the fracture guide portion comes into contact with the fracture portion to induce the fracture of the fracture portion, and the airbag is deployed smoothly.

[0015]

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 a steering wheel of an automobile. The steering wheel 1 is composed of a steering wheel main body 2 and an airbag device 3 mounted on an upper side of the steering wheel main body 2 which is an occupant side. Has been done. The steering wheel 1 is normally provided in a tilted state, but hereinafter, the airbag device 3 side, which is the passenger side, will be described as the upper side, and the steering shaft side (not shown) that is the vehicle body side will be described as the lower side.

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. As shown in FIG. 3, a boss 6a fitted to the steering shaft is arranged on the lower side of the steering wheel body 2 on the vehicle body side, and a boss plate 6b is integrally formed on the boss 6a. Has been formed. Further, the core metal of the spoke portion 7 is connected to the boss plate 6b, and the core metal of the rim portion 5 is connected to the core metal of the spoke portion 7. And these rim parts 5
A skin portion 8 made of a soft synthetic resin or the like is formed on the outer peripheral portion of the core metal and the outer peripheral portion of the spoke portion 7 on the rim portion 5 side of the core metal. Further, the lower side of the boss 6 is covered with a lower cover 10.

As shown in FIGS. 2 and 3, 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 has an upper plate portion 11a
And a peripheral wall portion 11b bent downward from the peripheral edge of the upper plate portion 11a.
In a, a circular inflator mounting hole 11c and a plurality of mounting through holes located around the inflator mounting hole 11c are formed. And this inflator mounting hole 11
Inflator 12 that is fitted to c from the bottom and injects gas
Is attached. 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 projectingly provided on the outer periphery of the main body portion 12a, and a plurality of mounting through holes are formed in the flange portion 12c. Further, an inflator cover 12d is attached to the lower side of the inflator 12.

Further, the airbag 14 is 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. Further, the peripheral portion of the opening 14a is reinforced by stacking and stitching cloth materials, and
A plurality of mounting through holes are formed around the opening 14a.

An annular retainer 16 for pressing the opening 14a of the airbag 14 is inserted inside the airbag 14. And with the retainer 16, the airbag
14 are fixed to the upper plate portion 11a of the base plate 11 by using rivets, and a plurality of bolts attached to the retainer 16 are respectively attached to the attachment through holes of the airbag 14,
The upper plate portion 11a of the base plate 11 and the mounting through hole of the inflator 12 are sequentially inserted into the flange 12
The air bag 14 is integrally fastened and fixed to the base plate 11 together with the inflator 12 by screwing a nut from the lower surface of c.

Further, as shown in FIGS. 1 to 7, a cover body (module cover) 20 is attached to the base plate 11 so as to cover the folded airbag 14. The cover body 20 includes a cover body 21 formed of a synthetic resin. For example, the cover body 21 is integrally formed by an injection molding method using a synthetic resin such as a thermoplastic elastomer. There is. Also,
The cover body 21 has a covering portion 22 that covers a part of the boss portion 6 and the spoke portion 7 in which the airbag 14 is stored, and has a substantially rectangular cylindrical shape protruding downward from the back surface of the covering portion 22. And a mounting wall 23.

Further, the covering portion 22 of the cover body 21 has a tear line 24 as a breaking portion which is weaker than other portions of the covering portion 22.
Are formed. The tear line 24 is formed thin by recessing the back surface side of the covering portion 22 in a groove shape, and is connected to the center breaking line 24a extending in both sides and the center breaking line 24a. It is formed in a substantially H-shaped plane by a pair of side break lines 24b on both sides extending in the front-rear direction in the vicinity of the portion. Also, at the central portion in the longitudinal direction of the central breaking line 24a,
A curved portion 24c is formed in a plane arc shape and curved toward the near side. Then, the coating portion is formed by the tear line 24.
A pair of front and rear door pieces 25a and 25b is formed in a portion surrounded by the mounting wall portion 23 of 22. In addition, the covering part 22
A rib 26 is formed in a lattice shape on the back side of the outer wall of the mounting wall 23.

The cover body 21 has a mounting wall portion 23.
Is fitted to the outside of the peripheral wall portion 11b of the base plate 11, and rivets are inserted into through holes formed in the mounting wall portion 23 and the peripheral wall portion 11b, and caulked, whereby the mounting wall portion 23 is attached to the base plate 11. 11 is fixed to the peripheral wall portion 11b.

Further, a decorative component mounting portion 28 is integrally formed at a substantially central portion of the covering portion 22 of the cover body 21, and a decorative component 31 is mounted on the decorative component mounting portion 28.

The decorative component mounting portion 28 is provided with a disk-shaped recess 28a in which the front surface side of the covering portion 22 is recessed in a disk shape. A plurality of through holes 28b communicating with the above are formed at a predetermined interval. Further, a back side annular recess 28c communicating with the through hole 28b is formed on the back surface side of the disk-shaped recess 28a. In addition, the through hole 28 of the back side annular recess 28c of the covering portion 22
In a portion adjacent to b, a plurality of support protrusions 32 are arranged on the inner peripheral side and the outer peripheral side of the through hole 28b concentrically with the center of the decorative component mounting portion 28 as the center, and the plurality of support protrusions 32 face the rear surface side. Is projected. The support protrusion 32 may be formed as a plurality of protrusions having a substantially circular cross section, or may be an arc-shaped or annular protrusion having the center of the decorative component mounting portion 28 as the center.

The decorative component 31 includes an emblem 33 as a substantially disk-shaped decorative body, a ring-shaped holding body 34, and
Multiple shafts as a connecting body, six shafts in the present embodiment
It consists of 35.

The emblem 33 is a disk-shaped substrate 33.
a, an emblem body 33b attached to the center of the upper surface of the board 33a, and a board surrounding the emblem body 33b.
It is composed of an emblem ring 33c attached to the upper surface of 33a. The emblem body 33b is made of resin or the like, the emblem body 33b and the emblem ring 33c are made of metal such as aluminum alloy, and the emblem body 33b is made of the emblem ring 33.
It is firmly fixed to c. And emblem 33
Is fitted into the disk-shaped recess 28a of the decorative component mounting portion 28, and through holes 33d corresponding to the through holes 28b of the decorative component mounting portion 28 are formed. Furthermore, these through holes 33d are
The openings are formed so that the diameter of each taper increases toward the front surface side.

As shown in FIG. 4 and the like, each shaft 35 has a head portion 35a formed at the base end portion, which taper diameter decreases toward the tip end side (that is, the back surface side of the covering portion). At the same time, from this head portion 35a, a shaft portion 35b, which is slightly tapered in diameter toward the tip side, is provided so as to project. Further, a locking portion 35d having an annular groove 35c is formed on the distal end side of the shaft portion 35b. A recess 35e for a tool or decoration is formed on the front side of the head 35a.

Further, as shown in FIG. 4 and FIG. 6, the holder 34 is formed into an annular plate shape by pressing a metal plate having a thickness of about 0.5 mm, for example. And this holder
A plurality of engaging holes 36 are formed at a predetermined interval in the 34, and six engaging holes 36 are formed according to the number of the shafts 35 in this embodiment, and a plurality of circular mounting holes 37 are formed in the present embodiment. 3 in form
Individually formed. Further, in each of the engaging holes 36, 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 extending from the insertion portion 36a in an arc shape in the circumferential direction.
36b and are formed. Further, on both sides of the holding groove 36b, a pair of locking protrusions 36c on both sides are provided in the vicinity of the insertion portion 36a so as to project to the back side by pressing or the like. Further, along a part of the outer peripheral portion of the holding body 34, a flange portion 38 as a fracture guide portion is formed upward.

To attach the decorative component 31 to the covering portion 22 of the cover body 21, first, the emblem 33 is fitted from the surface side into the disk-shaped recess 28a of the decorative component attaching portion 28 of the cover body 21, and the cover body 21 is attached. Hold the holder 34 in place on the back side of
The shafts 35 are inserted into the through holes 33d of the emblem 33 from the front surface side, and the locking portions 35e at the tip ends of the shafts 35 are inserted into the insertion portions 36a of the holding body 34. Then, in this state, the holder 34 is rotated in a predetermined direction by using a tool that engages with the mounting hole 37 of the holder 34. Then, the groove portion 35c of each shaft 35 is inserted into the holding groove portion 36b, the locking portion 35d is locked and prevented from coming off, and the locking portion 35d rides over the locking protrusion 36c, and the holding body 34 The rotation in the opposite direction is suppressed, and the shafts 35 are more reliably prevented from coming off.

Then, in this state, the head of each shaft 35
The emblem 33 and the holding body 34 are sandwiched between 35a and the locking part 35d, and the covering part 22 of the cover body 21 is sandwiched between the emblem 33 and the holding body 34, so that the decorative component 31
Is securely held by the covering portion 22.

Further, in this state, the upper surface of the holder 34 is
The holding member 34 is supported by abutting against a supporting projection 28c provided on the back surface of the covering portion 22 so that the holding body 34 does not come into planar contact with the back surface of the covering portion 22 and the flange portion 38 of the holding body 34 is provided. Is
The covering portion 22 is inserted into the curved portion 24c of the tear line 24, and the tip end portion of the flange portion 38 does not come into contact with the bottom portion of the groove of the tear line 24, that is, the thinnest portion, with a predetermined gap therebetween. .

Next, the deployment operation of the airbag device 3 will be described.

First, when a vehicle collides, an inflator is provided by a signal from a collision diagnosis unit (not shown).
When the igniter 12 is activated and the charged propellant is burned, 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 inflator 12, and is folded. The airbag 14 expands rapidly. Then, due to the inflation pressure of the airbag 14, as shown in FIG. 7, the covering portion 22 of the cover body 20 is pressed from the inside and deformed, and the holding body 34 of the decorative component 31 is pressed against the covering portion 22. . In this state, the support protrusion 32 on the back surface of the covering portion 22 is elastically deformed so as to be pressed and crushed by the holding body 34, and the flange portion 38 of the holding body 34 is deformed.
The curved portion 24c, that is, the central portion of the tear line 24, abuts and breaks. Then, by the inflation pressure of the airbag 14,
The fracture progresses along the tear line 24, and as shown in FIG. 1, the covering portion 22 is split and a pair of front and rear door pieces 25a and 25b are formed. Then, when the airbag 14 is further inflated, the decorative component 31 is retained in the front door piece 25a,
These door pieces 25a and 25b are deployed back and forth to expand the airbag 14
Of the airbag 14 is formed through the protrusion of the airbag 14.
Is projected and inflates and deploys between the occupant and the steering wheel main body 2 to reduce the impact applied to the occupant.

According to the present embodiment, the emblem 33, which is a member separate from the covering portion 22, is attached to the covering portion 22 of the cover body 20 that covers the airbag 14, thereby providing the covering portion.
As compared with the configuration in which the decorative portion is formed integrally with the structure 22, the decorative effect can be enhanced, and the decorativeness in the vehicle interior can be enhanced.

The decorative part 31 is covered with an emblem 33 and a holder 34 which are connected to each other by a shaft 35.
22 can be clamped easily and securely.
Therefore, as compared with a configuration in which insert molding is performed, the manufacturing process can be simplified, workability can be improved, the appearance can be improved, and the process yield can be improved. Further, even when the airbag device 3 is operated, the cover portion 22 is torn, and the door pieces 25a, 25b are deployed at a high speed, the decorative part 31 is securely held on the front door piece 25a. 14 can be smoothly expanded and deployed.

Furthermore, when the airbag 14 is deployed,
The flange portion 28 formed on the holding body 32 so as to face the curved portion 24c of the tear line 24 abuts the tear line 24 to induce breakage of the tear line 24, so that the covering portion 22 can be rapidly cleaved. Therefore, as in this embodiment, the tear line
Even if the center break line 24a of 24 is curved, the tear line 24
It is possible to reduce the internal pressure of the airbag 14 until it is broken, that is, the so-called primary internal pressure, to smoothly deploy the airbag 14, and to reduce the stress applied to the mounting wall portion 23 of the cover body 21.

Further, as described above, since the decorative component 31 itself contributes to the breakage of the tear line 24, for example, the tear line 24
It is not necessary to dispose the 24 at a position separated from the decorative component 31, and the degree of freedom in designing the decorative component 31 can be increased.
Further, the tear line 24 may have a normal sectional shape,
Since the flange portion 28 can be easily formed integrally with the holding body 34 by press molding or the like, the configuration can be simplified and the manufacturing cost can be reduced.

Further, a holding body located on the back surface side of the covering portion 22.
Since the 34 abuts on and supports the elastically deformable support protrusion 32 provided on the back surface side of the covering portion 22, the covering portion 22 and the holding body 34 are made into point contact or line contact to reduce the accuracy requirement. This makes it possible to easily manufacture the mold and protect the covering portion 22. Further, when the airbag 14 is deployed, the support protrusion 32 is elastically compressed and deformed, and the flange portion 38 is
Is brought into contact with the tear line 24 to induce breakage of the tear line 24, and the airbag 14 can be deployed smoothly.

In the above embodiment, the tear line
The flange portion 38 that breaks 24 is formed in the shape of a curved rectangular plate. However, for example, as in the second embodiment shown in FIG. It is also possible to form the protrusions 51, 51 toward the front. Then, in this configuration, when the airbag 14 is deployed, these protruding portions 51, 51 first contact the covering portion 22 to break the tear line 24, and the position where the breaking starts can be selected,
The covering portion 22 can be stably broken along the tear line 24, and the expanded shape of the airbag can be easily controlled.

Further, for example, as in the third embodiment shown in FIG. 9, one projecting portion 53 is provided so as to project from the central portion of the flange portion 38 toward the upper side, that is, the covering portion 22. You can also

Further, for example, as in the fourth embodiment shown in FIG. 10, the dimension of projecting the flange portion 38 from the holder 34 is changed so that it gradually increases from the central portion to the end portion, Alternatively, although not shown, it is possible to achieve stable and smooth breakage by gradually increasing the height from the end to the center.

Further, in each of the above embodiments, the emblem 33, the holding body 34 and the shaft 35 which are separate bodies are used, and one holding body 34 is rotated to lock all the shafts 35. The respective shafts may be integrally formed on the emblem side, and the holding body may be fixed by locking a plurality of shafts by moving the holding body in a predetermined direction such as a linear direction. It is also possible to use a plurality of retaining rings for fixing the shaft.

Further, the shape of the tear line broken at the flange portion is not limited to the curved portion 24c having an arc shape, but may be a substantially V-shaped plane, a straight line, a gentle curved shape, or a substantially U-shaped plane. It may have various shapes such as.

Further, the emblem of the decorative part can have various shapes and materials. For example, the shape is a disk, an ellipse, a triangle with smooth corners, a quadrangle,
The shape may be a rhombus, a pentagon, a polygonal shape with hexagons or more, or an irregular shape such as a cloud. Also, the material is
In addition to aluminum alloys, metal plates such as titanium alloys and stainless steels, polycarbonates, various nylon resins, ABS resins, various elastomer resins, various elastomer modified resins, resins such as unsaturated polyester, etc. ,
What stuck a film to the above various resins, or
On the various resins described above, a pattern such as a wood grain pattern, a marble pattern, or a carbon composite pattern is printed, and a foil such as a gold foil is stuck thereon, and further, a metalized process may 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. However, the shape and the mounting position of the airbag device are not limited to those described above, and, for example, an instrument. Applicable to passenger-side passenger airbag devices built into the panel, rear-seat airbag devices built into the front seat back, or airbag devices installed at the door or side of the seat for side collisions. be able to.

[0048]

According to the cover body of the airbag device according to the first aspect, the decorative effect can be enhanced by the decorative part which is separate from the covering portion of the cover body. Further, the covering portion is sandwiched between the decorative body and the holding body connected to each other by the connecting body, and the decorative component is firmly attached to the covering portion. Therefore, insert molding or the like for fixing the decorative component is not required, the appearance can be improved, the manufacturing cost can be reduced, and the versatility can be enhanced. And
When the airbag is deployed, the rupture guide portion provided on the holding body so as to face the rupture portion abuts the rupture portion to guide the rupture of the rupture portion, and the airbag can be smoothly expanded. In this way, since the decorative component contributes to the breakage of the fractured portion, the degree of freedom in designing the decorative component can be increased.

According to the cover body of the airbag device of the second aspect, in addition to the effect of the first aspect, the breakage portion is formed in a groove shape opening to the back surface side of the covering portion, and the breakage induction portion is formed. Since the protrusion is formed to be inserted into the breaking portion, the covering portion can be smoothly broken along the breaking portion with a simple configuration.

According to the cover body of the airbag device of the third aspect, in addition to the effect of the first or second aspect, since the fracture guiding portion is provided with the projecting portion projecting toward the fracture portion, the protrusion is formed. It is possible to easily control the deployment shape of the airbag by setting the start position of the fracture of the fracture portion by the portion.

According to the cover body of the airbag device of the fourth aspect, in addition to the effect of the first aspect of the invention, the supporting body which is elastically deformable for the holding body located on the back side of the covering portion can be elastically deformed. Since it is brought into contact with and supported by, the covering portion and the holding body can be prevented from coming into contact with each other in a planar shape, the accuracy requirement can be reduced, and the manufacturing cost can be reduced. Further, when the airbag deploys, the supporting projections are elastically deformed, and the fracture guide portions come into contact with the fracture portions to guide the fracture of the fracture portions, so that the airbag can be deployed smoothly.

[Brief description of drawings]

FIG. 1 is an explanatory view of a deployment operation 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 including the same airbag device.

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

FIG. 4 is an enlarged sectional view of a part of the same cover body.

FIG. 5 is a perspective view in which a part of the same cover body is cut away.

FIG. 6 is a bottom view of the same cover body.

FIG. 7 is an explanatory view showing a state just before the tear line of the cover body is broken.

FIG. 8 is an explanatory diagram of a deployment operation showing a second embodiment of the cover body of the airbag device of the present invention.

FIG. 9 is an explanatory view of the expanding operation showing the third embodiment of the cover body of the airbag device of the present invention.

FIG. 10 is an explanatory view of the expanding operation showing the fourth embodiment of the cover body of the airbag device of the present invention.

[Explanation of symbols]

 3 Airbag device 14 Airbag 20 Cover 22 Cover 24 Tear line as a break 31 Decorative part 32 Supporting protrusion 33 Emblem as a decorative body 34 Holder 35 Shaft as a joint 38 Flange part as a fracture guide 51 Protrusion

Claims (4)

[Claims] 1. A covering part for covering an air bag, the covering part formed with a breaking part that breaks when the airbag is deployed, and a decorative part attached to the covering part. The decorative part comprises the covering part. A decorative body disposed on the front side of the cover, a holding body disposed on the back side of the covering portion, and a connecting body connecting the decorative body and the holding body, and the holding body includes the covering portion. A cover body for an airbag device, characterized in that a rupture guide portion is provided opposite to the rupture portion. 2. The breaking portion is formed in a groove shape that opens to the back surface side of the covering portion, and the breaking guide portion is formed in a ridge shape that is inserted into the breaking portion. A cover body for the airbag device described. 3. The cover body for an airbag device according to claim 1, wherein the breaking guide portion is provided with a protruding portion that projects toward the breaking portion. 4. An elastically deformable support projection that abuts against a holder and supports the holder is provided on the back surface side of the covering portion. Cover body for airbag device.