JP3318995B2 - Arrangement structure of airbag device - Google Patents

Abstract

PURPOSE:To provide an arrangement structure for an air bag device in which an instrument panel dose not need projecting in its formation and a dead space is prevented. CONSTITUTION:An air bog device 15 provided with an air bag to be expanded in an emergency is arranged inside an opening 17 for air bag expansion formed on an assistant seat side of an instrument panel 1, while a honeycomb duct 35, which is provided with honeycomb structure inside it and is used as a duct 33 of a vehicle air conditioning device, is extended to the vehicle width direction along the inner face of the instrument panel 1 in the lower side of the opening 17 and is arranged so as to be a guide between the opening 17 and the air bag device 15 in the case of the air bag expansion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement structure of an airbag device which is deployed at the time of a vehicle collision or the like to protect an occupant in a passenger seat.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional arrangement structure of an airbag apparatus (see Japanese Patent Application Laid-Open No. 62-19855547).

An opening 103 is formed on the passenger side of the instrument panel 101, and the opening 103 is closed by an air bag grid 105. Inside the opening 103, it is housed in a resin cover case 107,
Airbag device 1 with airbag that deploys in an emergency
09 is supported by the strength member 111. A glove box 113 is provided below the airbag device 109, and a duct 115 for air conditioning inside the vehicle is provided on the rear side.

[0004]

In such an arrangement structure of the airbag device 109, it is necessary to surely deploy the airbag device toward the occupant in an emergency, and the airbag device is provided by the glove box 113 and the duct 115. Apparatus 1
The airbag device 109 is provided so as to be located closest to the vehicle interior, for example, because the mounting position of the 09 is restricted.

However, generally, the airbag device 109
The cover case 107 is formed in a predetermined shape for reasons such as common use of parts between different vehicle types, whereas the instrument panel 101 often has a different shape for different vehicle types. In some cases, a part 105a of the airbag lid 105 must be formed to protrude toward the vehicle interior according to the shape of the cover case 107,
There was a risk that the interior of the vehicle would be unnecessarily narrowed.

The shape of the instrument panel 101 is determined for reasons such as function and design.
The outer shape of the cover case 107 may not always match the outer shape of the cover case 107.
7 sometimes occurred.

The present invention has been made to solve such a conventional problem, and it is an object of the present invention to form a part of an instrument panel so as to protrude according to the shape of a cover case. An object of the present invention is to provide an arrangement structure of an airbag device that does not have a dead space.

[0008]

In order to achieve the above-mentioned object, an arrangement structure of an airbag device according to the present invention includes an airbag device having an airbag that is deployed in an emergency, and an airbag device having an airbag that is deployed in an emergency. The duct of the vehicle air conditioner is disposed in the vehicle width direction along the inner surface of the instrument panel below the opening, and the air bag device is disposed in the opening of the airbag. The airbag is arranged so as to serve as a guide when the airbag is deployed.

[0009]

[Function] Since the duct of the vehicle air conditioner is arranged along the inner surface of the instrument panel located below the opening,
By forming the duct in accordance with the shape of the instrument panel, there is no need to protrude and form the instrument panel, and there is no dead space.

[0010]

Further, since the duct of the vehicle air conditioner is arranged between the opening and the airbag device so as to serve as a guide when the airbag is deployed, even if the airbag device is provided on the rear side of the duct, the airbag device can be used. Is reliably deployed in a predetermined direction in an emergency.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the interior of a vehicle equipped with an airbag device according to one embodiment of the present invention, and FIG. 2 is a view showing the arrangement of the airbag device according to one embodiment of the present invention. FIG. 3 is a perspective view showing the honeycomb duct and the airbag device of FIG. 2; FIG. 4 is a front view of the honeycomb duct and the airbag device of FIG.
FIG. 3 is a schematic diagram showing a state where the airbag of FIG. 2 is deployed.

As shown in FIG. 1, an instrument panel 1 is provided at the front of the passenger compartment. The passenger seat 3 side of the instrument panel 1 has a shape in which a side surface 1b is curved downward from the substantially flat upper surface 1a toward the occupant. A center vent 5 is provided at a central portion 1c of the instrument panel 1, and a side vent 7 is provided at an end 1d on the passenger seat 3 side. The air from the center vent 5 and the side vent 7 is directed toward an occupant. Is blown out.

As shown in FIG. 2, the instrument panel 1 includes a metal panel body 9, a resin pad 11 and a skin 13, and the pad 11 has a surface covered with the skin 13 and It is fixed to.

A substantially rectangular opening 17 in which an airbag device 15 is disposed is formed in the panel body 9 on the upper surface 1a side of the instrument panel 1, and an airbag grid 19 is fitted around the opening 17. A stepped lid fitting portion 21 to be combined is formed by the pad 11 and the skin 13.

The air bag lid 19 is provided with a lid body 23.
And a pad member 25 and a skin 27. The lid main body 23 is bolted to the panel main body 9 on the vehicle front side via mounting members 29 and 31. Thereby, the air bag grid 19 is fixed to the instrument panel 1 and closes the opening 17. Further, when a strong force is applied to the air bag grid 19 fixed in this way from the inside of the instrument panel 1, the air bag grid 19 is bent at the rotation center portion 19a near the opening 17 on the fixed side, and the opening 17 It will be open. Note that the surface of the air bag grid 19 is formed so as to be substantially continuous with the surface of the instrument panel 1.

As shown in FIGS. 3 and 4, a duct 33 of a vehicle air conditioner 32 is provided inside the side surface 1b of the instrument panel 1 located below the opening 17.

The duct 33 includes a honeycomb duct 35 having a honeycomb structure inside, and two bent connecting pipes 3.
7, 39. One end 35a of the honeycomb duct 35 is connected to a vent outlet 32a of the vehicle air conditioner 32 via a connection pipe 37, and the other end 35b is connected to an outlet 7a of the side vent 7 via a connection pipe 39. . As a result, the temperature-controlled air flows from the vent outlet 32a to the connection pipe 37, the honeycomb duct 35, and the connection pipe 39.
And is supplied into the vehicle cabin from the outlet 7 a of the side vent 7.

As shown in FIG. 5, the honeycomb duct 35 has substantially the same height as the knees of the occupant M seated on the passenger seat 3, and
As shown in FIGS. 2 and 3, the instrument panel 1
The inner side of the side surface 1b is extended along the vehicle width direction. The outer surface 35c of the honeycomb duct 35 on the vehicle interior side is formed in a shape along the inner surface of the side surface 1b.

As shown in FIG. 2, an airbag device 15 having an airbag 41 that is deployed in an emergency is disposed inside the opening 17 and behind the honeycomb duct 35. A tongue 35 e extending from the outer surface 35 d of the honeycomb duct 35 on the airbag device 15 side to the edge 17 a of the opening 17 on the vehicle interior side and continuing to the lid fitting portion 21 extends. The outer surface 35d and the tongue 35e serve as a guide for guiding the airbag 41 so that the airbag 41 is deployed in the occupant direction in the vehicle cabin.

The airbag device 15 is attached via a bracket 45 to a strength member 43 extending in the vehicle width direction in the instrument panel 1. The airbag device 15 includes a cover case 47 made of resin, an airbag 41 folded and housed in the cover case 47, and an unillustrated airbag that ignites according to a signal from a collision sensor and sends high-pressure gas into the airbag 41. And an inflator.
As shown in FIG. 3, the surface of the cover case 47 on the vehicle interior side is formed so as to be easily broken in a vertical direction by a thin portion 47a.

As a result, as shown in FIG. 5, the airbag 41 is rapidly inflated by breaking the thin portion 47a of the cover case 47 in an emergency such as a vehicle collision, so that the airbag grid 19 closes the fixed side opening 17 near the opening 17. At the rotation center portion 19a of the vehicle, and is deployed from the opening 17 toward the vehicle interior.

A glove box 49 is provided below the honeycomb duct 35 and the airbag device 15 so as to open toward the passenger compartment.
9 a is closed by a lid 51 so as to be openable and closable.

According to such an arrangement structure of the airbag device 15, the honeycomb duct 35 extends along the inner surface of the side surface 1 b of the instrument panel 1 located below the opening 17.
Is extended and the shape of the honeycomb duct 35 is made to match the shape of the instrument panel 1, so that the occurrence of a dead space can be easily prevented. Further, the outer surface 35c of the honeycomb duct 35 on the vehicle interior side is changed to the side surface 1b.
Therefore, it is not necessary to form the instrument panel 1 so as to protrude, so that the interior space of the vehicle compartment can be widened and the shape of the instrument panel 1 can be freely designed.

The temperature-controlled air flowing through the honeycomb duct 35 is disturbed by the bent connecting pipes 37 and 39. However, since the inside of the honeycomb duct 35 has a honeycomb structure, air noise hardly occurs. Therefore, the honeycomb duct 35
Even if is located near the occupant in the passenger seat, there is no fear of giving the occupant a sense of discomfort or discomfort due to the generation of abnormal noise.

Further, since the outer surface 35d and the tongue 35e of the honeycomb duct 35 are used as guides for guiding the airbag 41, even if the airbag device 15 is provided on the rear side of the honeycomb duct 35, In the event of an emergency, it can be reliably deployed to the occupants, and safety can be ensured.

Further, as shown in FIG. 5, when the occupant M is received by the airbag 41 at the time of a vehicle collision or the like, the knee of the occupant M may collide with a part of the instrument panel 1. Since the honeycomb duct 35 is disposed so as to be substantially the same height as the occupant M's knee, the impact due to the collision is reduced and absorbed by the honeycomb duct 35. Thereby, the knee of the occupant M can be protected at the time of a vehicle collision or the like.

[0029]

As described above, according to the present invention, the instrument panel does not need to be formed so as to protrude, and no dead space is generated. The shape of the panel can be freely designed.

Further, the duct of the vehicle air conditioner serves as a guide when the airbag is deployed, and in an emergency, the airbag is reliably deployed in a predetermined direction, so that safety is ensured.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing the interior of a vehicle equipped with an airbag device according to one embodiment of the present invention.

FIG. 2 is a sectional view of a main part showing an arrangement structure of an airbag device according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a duct and an airbag device of FIG. 2;

FIG. 4 is a front view of the duct and the airbag device of FIG.

FIG. 5 is a schematic diagram showing a state in a vehicle compartment when the airbag of FIG. 2 is deployed.

FIG. 6 is a cross-sectional view showing an arrangement structure of a conventional airbag device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument panel 3 Passenger's seat 15 Airbag device 17 Opening 32 Vehicle air conditioner 33 Duct 35 Honeycomb duct 41 Airbag

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-303948 (JP, A) JP-A-4-55146 (JP, A) JP-A-4-353051 (JP, A) 198547 (JP, A) Japanese Utility Model 2-25345 (JP, U) Japanese Utility Model 3-11962 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 21/16-21 / 32

Claims (1)

(57) [Claims] An airbag device provided with an airbag that is deployed in an emergency is disposed in an opening for airbag deployment formed on a passenger side of an instrument panel, and a duct of a vehicle air conditioner is connected to the opening. An airbag device which extends in the vehicle width direction along the inner surface of the instrument panel below the airbag device and is arranged between the opening and the airbag device so as to serve as a guide when the airbag is deployed. Arrangement structure.