JPH0542858A - Instrument panel having automobile air bag device built therein - Google Patents

Abstract

PURPOSE:To upgrade the appearance of an instrument panel and to prevent the panel from being flawed. CONSTITUTION:A tubular portion 11 having a nozzle 10 discontinuously formed therein is formed on the pad 1b side face of each of the three U-shaped sides of lid 5 near the edge portion of an air bag springing opening 3 provided within end edge skin 1c, except for one side of the lid 5 to which a hinge is attached, and gas is first generated from a first gas generator in response to an automobile collision signal and introduced into the tubular portion 11 and injected from the nozzle 10 whereby small holes are intermittently formed in the skin 1c and the pad 1b. An air bag control unit which sends an inflation signal of an air bag device 2 by which the plurality of intermittent holes becoming the weak portions of the skin 1c and the pad 1b are broken to a second gas generator 2b with a delay from gas injection of the first gas generator by a delay circuit is connected to the instrument panel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument panel incorporating an automobile air bag device.

[0002]

2. Description of the Related Art An example of this type of technology is shown in FIG. 5 (the service manual structure edition "E-" issued by Honda Motor Co., Ltd. in October 1990).
KA7 type ").

That is, reference numeral 1 in the drawing denotes an instrument panel, which is formed of a panel body 1a made of a synthetic resin material such as polypropylene (PP) composite material and a foamed material such as polyurethane foam disposed on the panel body 1a. The pad 1b and the pad 1b arranged on the surface of the pad 1b
An airbag device 2 that is integrally configured with a skin 1c made of polyvinyl chloride (PVC) or the like that is adhered at the time of forming b, has an airbag 2a and an inflator 2b as main components below the instrument panel 1. It is stored. The inflator 2 of the airbag device 2 is attached to the instrument panel 1 facing the airbag device 2.
The air bag ejection opening 3 is formed so that the air bag 2a in which gas is ejected from the b and inflated and deployed can be ejected,
The opening 3 is attached to one side 3a of the opening 3 via a hinge (not shown) so that it can be opened or closed as shown by a chain double-dashed line or closed as shown by a solid line, and a gap 6 between the opening 3 is removed. And a lid 5 is provided to cover most of them.

[0004]

However, in such a conventional structure, the instrument panel 1 is used.
Since the gap 6 between the opening 3 and the lid 5 is always formed on the surface of the, the appearance is poor and the appearance quality may be impaired. In addition, the lid 5 has a large variation in thickness due to the nature of its constituent parts, so that the lid 5 may become higher or lower than the surface of the instrument panel 1 (FIG. 5 shows an example in which it becomes higher). In this case, since the peripheral edge of the lid 5 or the inner edge of the opening 3 is seen as a knurled surface, not only does it look bad, but also a child or the like may touch the peripheral edge of the lid 5 or the inner edge of the opening 3 to scratch. There are challenges.

The present invention has been made in view of such a conventional problem, and improves the appearance quality of the instrument panel and prevents the vehicle from being damaged by an instrument incorporating an automobile airbag device. The purpose is to provide a panel.

[0006]

An instrument panel incorporating an automobile airbag device according to the present invention includes:
The panel body, the pad arranged on the panel body, and the skin formed on the surface of the pad are integrally formed, and the panel body is inflated at a position facing the airbag apparatus when the airbag apparatus is operated. An airbag pop-out opening is formed so that the deploying air bag can pop out, and a lid is attached to one side of this opening so as to be openable and closable via a hinge and covers most except a gap between the opening and the opening. In the panel body, on the surface of the pad side near the edge of the opening facing the edge of the three sides formed in a U shape except for one side to which the hinge of the lid is attached, the ejection port is intermittently provided. By forming the formed tubular portion, a gas is first generated from the first gas generator in response to an automobile collision signal and introduced into the tubular portion, and the same gas is ejected from the ejection port. Small holes are intermittently formed in the skin and the pad, and then a plurality of intermittent holes are formed by the delay circuit after the gas injection of the first gas generator to make the skin and the pad fragile. It is characterized in that an airbag control unit for emitting an inflation and expansion signal of the airbag device to be broken is connected to a second gas generator.

[0007]

[Operation] According to this structure, when the collision of the automobile is detected, the airbag control unit is activated to first give a signal to the control unit of the first gas generator. This signal guides the gas to the tubular portion. The gas is ejected from the ejection port of the cylindrical portion to intermittently form small holes in the skin and the pad on the other three sides except one side. Next, the delay circuit issues an inflation and expansion signal to the second gas generator of the airbag control unit of the airbag apparatus after the gas ejection of the first gas generator, so that the airbag of the airbag apparatus is inflated and deployed. To do.
By the deploying force, while breaking each of the plurality of intermittent holes that have become fragile parts of the outer skin and the pad, the broken pad and the outer skin are opened together with the lid, and the opened air bag ejection opening is opened. The airbag swells and protects the occupant. However, since the lid is not exposed on the skin of the instrument panel at all times, it is flush.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings by attaching the same reference numerals to the same or equivalent parts as in the conventional example.
1 to 4, reference numeral 1 denotes an instrument panel, which is formed of a panel body 1a made of a synthetic resin material such as polypropylene (PP) composite material and a foamed material such as polyurethane foam disposed on the panel body 1a. The pad 1b and the pad 1b arranged on the surface of the pad 1b
It is integrally formed with a skin 1c made of polyvinyl chloride (PVC) or the like that is adhered at the time of forming b.

Inside the instrument panel 1, an airbag device 2 having an airbag 2a and an inflator 2b, which is a second gas generator, as main components is housed. The inflator 2b is fixed to a steering member 2c installed between the side parts of the automobile.

An air bag 2a in which gas is ejected from an inflator 2b of the air bag device 2 and inflates and deploys to the instrument panel 1 facing the air bag device 2.
The airbag pop-out opening 3 is formed so as to be able to pop out. A lid 5 is attached to the upper end side 3a, which is one side of the airbag ejection opening 3, so as to be openable and closable via, for example, iron hinges 4 and 4, and covers most of the lid 3 except for a gap 3b between the opening 3 and the opening 3. It is provided. The lid 5 is opened by an airbag 2a which is inflated and deployed when the airbag device 2 is operated, and is made of a synthetic resin material such as polypropylene (PP) composite material.
Further, the hinges 4 and 4 are attached to the panel body 1a and the front surface side of the lid 5 so that the lid 5 opens only to the front surface side of the instrument panel 1. Note that the hinges 4 and 4 are not limited to separate hinges made of iron as described above, and may be, for example, synthetic resin hinges, or the lid 5 itself is formed integrally with the panel body 1a to have a thin shape. Of course, a hinge may be used.

The hinges 4 and 4 of the airbag ejection opening 3
A plurality of ejection ports 10 are intermittently formed on the back surface side of the outer skin 1c at the edges of the three sides formed in a U shape except for the upper side 3a which is one side to which the The cylindrical portion 11 thus formed is arranged. The pad 1b in the portion where the tubular portion 11 is provided has a recess 12 that receives the tubular portion 11, and the deepest portion of the recess 12 is formed thinner than the general portion of the pad 1b. .. The tubular portion 1
The first gas generator 13 is connected to one end 11a of the first through the duct 14, and the other end (not shown).
Is closed.

As shown in FIG. 4, the airbag device 2
The delay circuit 16 is interposed in the airbag inflator control unit 15 which gives an inflation deployment signal to the inflator 2b which is the second gas generator. Therefore, before the expansion and development signal is issued, an operation signal is issued to the first gas generator 13 forming the fragile portion 17 on the skin 1c and the pad 1b.
An airbag control unit 19 is connected to the first gas generator control unit 18. This airbag control unit 1
A collision detection sensor 20 is connected to 9. Reference numeral 21 is a glove box.

Next, the operation will be described. Collision detection sensor 20
When the vehicle collision is detected, the airbag control unit 19 is activated to first give a signal to the first gas generator control unit 18. This signal causes a gas to be ejected from the first gas generator 13, and the gas is caused to pass through the duct 14 to form the cylindrical portion 1.
It is guided from one end portion 11 a of the one into the tubular portion 11. The gas passes through the inside of the tubular portion 11 and is ejected to the outside from an appropriate ejection port 10 to intermittently form small holes 22 in the pad 1b and the skin 1c on three sides other than one side. Next, the delay circuit 16 causes the airbag inflator control unit 15 of the airbag apparatus 2 to operate after the gas ejection from the first gas generator 13 is delayed, and the inflator 2 serving as the second gas generator is activated.
By issuing an inflation / expansion signal to b, gas is introduced from the inflator 2b into the airbag 2a of the airbag device 2, and the airbag 2a is inflated and deployed. The deploying force causes the lid 5 to break while breaking each of the plurality of intermittent holes 22 that have become weakened portions 17 of the pad 1b and the skin 1c.
At the same time, the broken pad 1b and outer skin 1c are opened, and the airbag 2a is inflated to the outside through the opened airbag ejection opening 3 to fulfill a predetermined occupant cushioning function.

In this way, the airbag pop-out opening 3 is formed on the surface of the instrument panel 1 for the first time when the airbag device 2 is actuated at the time of a vehicle collision, and normally any gap is left in the instrument panel 1. Since it is not formed on the outer skin 1c and is flush, it looks very good, the appearance quality is improved and no edges are generated, so that the nails are not caught and the instrument panel 1 is scratched. , And the structure is extremely simple and inexpensive.

[0015]

The instrument panel incorporating the automobile airbag device of the present invention includes a panel body,
An air bag that is integrally formed by a pad arranged on the panel body and a skin formed on the surface of the pad, and inflates and deploys at a position of the panel body facing the air bag device when the air bag device operates. An airbag pop-out opening is formed so that the pop-out can be popped out, a lid is attached to one side of the opening via a hinge so as to be openable and closable, and a lid that covers most of the opening except the gap between the opening is provided, Is a cylinder in which ejection ports are intermittently formed on the surface of the pad side near the edge of the opening facing the edge of the three sides formed in a U shape except for one side to which the hinge of the lid is attached. When the vehicle collision signal is generated, gas is first generated from the first gas generator and introduced into the tubular portion, and the same gas is ejected from the ejection port, whereby the skin and the pad are formed. Intermittently to form a small hole in de,
Next, a delay circuit delays the gas ejection of the first gas generator and ruptures each of the plurality of intermittent holes that have become weakened portions of the skin and the pad, and outputs the inflation and development signal of the airbag device to the second gas. Since the air bag control unit for emitting to the generator is connected, when the collision of the automobile is detected, the air bag control unit is activated to first send a signal to the control unit of the first gas generator. give. This signal guides the gas to the tubular portion. The gas is ejected from the ejection port of the cylindrical portion to intermittently form small holes in the skin and the pad on the other three sides except one side. Next, the delay circuit issues an inflation and expansion signal to the second gas generator of the airbag control unit of the airbag apparatus, after the gas ejection of the first gas generator, to inflate and deploy the airbag of the airbag apparatus. To do. By the deploying force, while breaking each of the plurality of intermittent holes that have become fragile parts of the skin and the pad, the broken pad and skin are opened together with the lid, and the opened air bag ejection opening is opened. The airbag swells and protects the occupant. However, since the lid is not exposed on the skin of the instrument panel at all times, it is flush, so it is possible to improve the appearance quality of the instrument panel and prevent scratches. It has an effect.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line AA of FIG. 2 according to an embodiment of the present invention.

FIG. 2 is a partially cutaway perspective view of a main part of FIG.

3 is a perspective view showing the instrument panel of FIG. 1. FIG.

FIG. 4 is a block diagram with respect to FIG. 1.

FIG. 5 is a vertical sectional view showing a conventional example.

[Explanation of symbols]

 1 Instrument Panel 1a Panel Body 1b Pad 1c Skin 2 Airbag Device 2a Airbag 2b Inflator (Second Gas Generator) 3 Airbag Ejection Opening 3b Gap 4 Hinge 5 Lid 10 Spout 11 Cylinder 13 1st Gas Generator 16 Delay circuit 17 Weak section 19 Airbag control unit 22 Hole

Claims (1)

[Claims] 1. An airbag integrally formed of a panel body, a pad arranged on the panel body, and a skin formed on a surface of the pad, the airbag being provided at a position of the panel body facing the airbag device. An air bag pop-out opening is formed so that the air bag that inflates and deploys when the device is activated can be popped out. In an instrument panel incorporating an airbag device provided with a lid for covering, in the panel body, an edge of an opening facing the edge of three sides formed in a U shape except for one side to which the hinge of the lid is attached is formed. On the surface of the pad side in the vicinity of the portion, a cylindrical portion having intermittently formed jet ports is formed, and gas is first generated from the first gas generator in response to a collision signal of the automobile. A small hole is intermittently formed in the skin and the pad by injecting the same gas into the tubular portion and ejecting it from the ejection port, and then a gas is ejected from the first gas generator by a delay circuit. An airbag control unit is connected to the second gas generator for inflating and deploying a signal of the airbag device that breaks each of the plurality of intermittent holes that have become weaker portions of the skin and the pad later. An instrument panel with a built-in automotive airbag device.