JPH0986325A - Mark for air bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mark sheet which can be easily stuck, can be prevented from being peeled off and scattered when an air bag is expanded, and furthermore can effectively indicate its contents. SOLUTION: An air bag cover 3 is provided, which usually houses an air bag, and permits the air bag to be expanded so as to be developed with its part ruptured when the air bag is expanded, a mark sheet 7 made out of soft synthetic resin on which its contents are indicated is thermally bonded over the aforesaid air bag cover with hot melt type adhesives of a film shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag for protecting an occupant from an impact by inflating in the event of an automobile collision.
In particular, the present invention relates to an airbag mark that displays the manufacturer name, vehicle type name, grade, brand, decorative design, etc. of the automobile.

[0002]

2. Description of the Related Art In automobiles, there are vehicles equipped with airbags that sense and inflate the impact of a collision in order to protect the body of the driver or a passenger in the passenger seat from the impact of the collision in the event of an unexpected collision.

This type of airbag is normally folded and stored, for example, in the center of the steering wheel. However, the name of the vehicle manufacturer, vehicle type, grade, etc. is displayed on the surface of the cover that stores the airbag. A mark showing a brand, a decorative pattern, etc. is attached, and the cover is made effective so that the mark is always visible from the inside of the vehicle.

Since the conventional mark is made of a metal plate or a synthetic resin plate, when the airbag is inflated at the time of a collision, the mark may fly off the cover and hit an occupant to cause a secondary disaster. Therefore, this mark is formed of a soft synthetic resin sheet, and this mark is sewn to the case with a thread having elasticity (actual flat 1-8135).
No. 1), or a color mark placed in a mold so that the case is cast during molding with resin (JP-A-5-162606), or a part of the mark is caulked with a metal stopper. There are things.

[0005]

However, in the case where the marks are sewn as described above, it is possible to sew the wall thickness of the mark sewn portion of the case, in addition to requiring a lot of labor for sewing. There is a problem in that the structure of the cover itself must be complicated, because the cover must be formed to be thin.

[0006] Further, the case of using the casting case has a problem that the mark must be correctly set for each shot in the molding die at the time of molding the cover, which is extremely troublesome. In addition, since it is cast in the cover, the color of the cover is limited and the display effect is limited. In addition, since the clasp is assembled with a metal rivet or the like, there is a problem in terms of safety when the mark comes off and scatters when the airbag is inflated.

[0007]

According to the present invention, the mark can be easily attached, the mark does not come off and scatter when the airbag is inflated, and the display content by the mark can be effectively expressed. The purpose of this is to attach a soft synthetic resin mark sheet representing the displayed contents to the outer surface of the cover by heat bonding with a hot melt type adhesive. It is preferable to use a sheet material made of a soft synthetic resin in which the display content is three-dimensionally expressed by embossing or printing the mark sheet, further using a metallic urethane sheet as the sheet material, and acryl on the surface of the display content formed by embossing. It is preferable to apply a coating material composed of a resin of the series or a polyurethane type and build it up in the shape of a convex lens.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

As shown in FIG. 1, a cover 3 for accommodating an airbag 2 is provided at a central position of a steering wheel 1 of an automobile, and a mark sheet 4 is located on an upper surface of the cover 3.

The cover 3 is a molded product made of synthetic resin as shown in FIG. 2 as an example of a shape, and is fitted on the handle shaft cover 5 as shown in FIG. The airbag 2 is fixed by 6, and the airbag 2 is folded and accommodated therein.

The mark sheet 4 is made of a soft synthetic resin sheet material 7. For example, a metallic urethane sheet is used when the mark is provided with glitter. The sheet material 7 made of this metallic urethane sheet is a laminate of a urethane film 8 having an uppermost layer having a thickness of about 50 μ, an aluminum vapor deposition layer 9, and a urethane sheet 10 having a thickness of about 100 μ as shown in an exploded view in FIG. This sheet material 7 is heat-bonded to the cover 3 via a hot-melt type film adhesive 11.

At the time of the thermal bonding, the sheet material 7 is pressed by the high-frequency heating die 12, and the die 12 has a die 13 on its pressing surface. The die 13 raises the display content 14 on the sheet material 7. A portion other than the above is pressed, and by this pressing, the film-like adhesive 11 is heat-bonded to the cover 3. In this case, a cutting blade 15 having a length corresponding to the thickness of the sheet material 7 may be provided around the pressing die 12 so that the peripheral shape can be cut and aligned at the same time as thermal bonding.

The mark sheet 4 heat-bonded to the cover 3 in this manner has a bright background color of aluminum and gives a visually distinctive presence, and the display content 14 looks three-dimensional.
The visual effect is further enhanced.

If the transparent paint 16 of acrylic resin or polyurethane resin is applied in a convex lens shape on the upper surface of the sheet material 7 of the mark sheet 4 as shown in FIG. 6, the portion of the display content 14 is covered. At the same time, the action of the convex lens promotes a three-dimensional effect, further enhancing the visual effect. This paint is not only dried by leaving it to stand, but also heat cured or U
It may be V-curing.

In the case of the mark sheet 4, it is optional to apply paint to the outer surface of the portion of the display content 14 or the outer surface other than the portion of the display content 14 to give a visual change.

FIG. 5 shows another example of the sheet material 7 of the mark sheet 4. In this example, the metallic urethane sheet (same as 7 in FIG. 4, the thickness is 150 μ) and then the thickness 50 is used.
A PVC transparent sheet 17 having a thickness of about 0 μ, a PVC foam sheet 18 having a thickness of about 900 μ, a film adhesive 11, and a release paper 19 are laminated, and the release paper 19 is peeled off at the time of heat bonding to the cover 3 and is placed at a predetermined position on the cover 3. It is placed and heat-bonded by the pressing die 12 in the same manner as described above. In this case, printing with ink on the uppermost surface is optional as in the case described above. The hot-melt type adhesive is not necessarily in the form of a film, and a solid one may be heated and melted and applied to a predetermined portion of the back surface of the mark sheet 4 by a dispenser to be adhered.

[0017]

As described above, according to the present invention, the mark sheet is made of the soft synthetic resin sheet material, and the mark sheet is adhered to the cover with the hot-melt type thermal adhesive. Since the mark sheet does not scatter and is safe, and the displayed contents can be expressed three-dimensionally, it is possible to enhance the display effect under normal conditions, and especially when a metallic urethane sheet is used, it has a glittering visual effect. Can be a high mark. Further, since the mark sheet can be attached only by heating and pressing, the attaching step does not require labor and the attachment can be performed easily and reliably.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a cover taken out from FIG.

FIG. 3 is a half sectional view corresponding to AA in FIG.

FIG. 4 is an exploded view showing the mark sheet in FIG.

FIG. 5 is a cross-sectional view showing another embodiment of the mark sheet.

FIG. 6 is a view corresponding to FIG. 4 showing another embodiment of the mark sheet.

[Explanation of symbols]

 1 Handle 2 Airbag 3 Cover 4 Mark Sheet 7 Soft Synthetic Resin Sheet Material 8 Urethane Film 9 Aluminum Deposition Layer 10 Urethane Sheet 11 Film Adhesive (Hot Melt Type) 12 Stamping Mold 13 Model 14 Display Content 15 Cutting Blade 16 Paint 17 PVC Transparent sheet 18 PVC foam sheet 19 Release paper

Claims (3)

[Claims] 1. An airbag cover which accommodates an airbag at all times and which is partially broken when the airbag is inflated to allow inflation and deployment of the airbag. An air bag mark, characterized in that the soft synthetic resin mark sheet is heat-bonded via a hot melt type adhesive. 2. The airbag mark according to claim 1, wherein the mark sheet is made of a soft synthetic resin sheet material in which display contents are three-dimensionally expressed by embossing or printing. 3. The sheet material is made of a metallic urethane sheet, and the surface of the display contents formed by embossing is coated with an acrylic resin or polyurethane resin coating material and raised in the shape of a convex lens. Airbag mark described.