JPH10273010A - Air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cover nearly from the head part to the waist part of an occupant with an air bag so as to protect him in the case of side collision by nearly simultaneously expanding at first an air bag part protecting nearly the head part and an air bag part protecting nearly from the breast part to the waist part, and next expanding an air bag part protecting nearly from the shoulder part to the breast part. SOLUTION: When an occupant P is in a rough posture inclined on the inside of a door in the case of side collision and the like of a vehicle, the separated chambers 1a, 1b of an air bag begin to develope while a little expanding forward in the vehicle. Further the separated chamber 1b is developed while entering the gap between the door 6 inside and nearly the waist part - the breast part (the flank) of the occupant P, and expanded. When the occupant P is moved on the inside of the door 6 by reaction of the bag, because a gap is generated between the occupant P and the inside of the door 6, the air bag separated chambers 1a, 1b are developed forward in the vehicle while further expanding, hence a separated chamber 1c is pulled and hung so as to enter the gap between the shoulder part - the breast part of the occupant P and the inside of the door 6, and simultaneously begins to expand. Hereby the occupant P can be restrained by the air bag.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airbag device having an airbag provided on a seat side or a vehicle body side for inflating and deploying and supporting an occupant by detecting an impact force in a vehicle width direction. .

[0002]

2. Description of the Related Art As a conventional airbag device, for example, there is an airbag device as shown in FIGS. 20 and 21 (the technology described in Japanese Patent Application Laid-Open No. 6-227348). FIG. 20 is a left side view of the side of the vehicle body viewed from the inside of the vehicle, and FIG. 21 is an explanatory diagram showing an inflated state of the airbag. The airbag 1 is of an integral type for protecting the occupant's head to the chest, and the airbag 1 is divided into two compartments 1a and 1b. It has a structure in which an airbag compartment 1a that protects substantially the head is deployed.

Next, a conventional technique shown in FIG.
No. 105023), the airbag 1 is an integral type that protects the occupant's head to the chest, is mounted on a side door, and moves the airbag 1 in accordance with the position of the occupant's seat. Having means. Further, as shown in FIG. 23, in the integrated airbag that protects the occupant's head, chest, and waist, the airbag may be mounted not on the side door but on the seat.
In the figure, reference numeral 3 denotes a head restraint. In a state where the airbag device shown in FIGS. 20 to 23 is equipped and the occupant is normally seated, FIG.
As shown in FIG. 25, in the case of a vehicle side collision as shown in FIG. Since the time required for restraint is short, there was no problem if the timing of deploying the airbag was adjusted to the restraint timing from the waist to the chest.

[0004]

However, in such a conventional airbag device, as shown in FIG. 26, when the occupant P takes a rough posture slightly inclined inward of the door, In the case of a side collision, as shown in FIG. 27, the timing at which the inside of the door interferes with the occupant P has the problem that the timing from the occupant's shoulder to the chest is the earliest, followed by the waist and the head. .

The present invention has been made in view of such a conventional problem. As shown in FIGS. 1 to 3, an integrated airbag covering substantially the chest to the head has a head portion. Divided into an airbag part that protects the shoulder and chest, and an airbag part that protects the chest and waist, and an airbag part that protects the head and protects the chest and waist It is an object of the present invention to solve the above-mentioned problem by first inflating the airbag portion substantially at the same time and then inflating the airbag portion protecting the shoulder-chest. Furthermore, by inflating the airbag portion for protecting the head substantially and the airbag portion for protecting the chest to the waist at substantially the same time, the occupant is moved slightly from the inside of the door, and a gap is formed between the shoulder and the inside of the door. An object of the present invention is to solve the above-mentioned problem by forming an airbag portion for protecting the shoulder portion from the chest portion into a gap between the shoulder portion and the inside of the door and inflating the portion.

[0006]

According to a first aspect of the present invention, there is provided an airbag device according to the first aspect of the present invention, which is provided on a seat side and a vehicle body side and detects an impact force in a vehicle width direction. An inflatable, inflatable, unfolded occupant-integrated airbag that covers the waist, an airbag portion that protects the unified airbag substantially in the head, and an airbag portion that protects the shoulder approximately from the chest. At least three parts in the height direction are roughly divided into an airbag portion for protecting the chest to the waist, and the airbag portion for protecting the head and the airbag portion for protecting the chest to the waist are inflated substantially simultaneously, and then substantially inflated. Shoulder ~
The airbag portion that protects the chest is inflated. In the airbag device according to claim 2, in the airbag device according to claim 1, an airbag portion that protects substantially the head, an airbag portion that protects substantially the shoulder to the chest,
A configuration was adopted in which a partition provided to divide an approximately airbag portion from the chest to the waist was provided with an air vent near the front of the vehicle. In the airbag device according to the third aspect, in the airbag device according to the first aspect, an airbag portion that substantially protects a head, an airbag portion that substantially protects a shoulder to a chest, and protects a substantially chest to a waist. A ventilation hole is provided in a partition provided to divide the air bag into the air bag portion, and the area of the ventilation hole gradually increases toward the front of the vehicle.

[0007]

Hereinafter, the present invention will be described with reference to the drawings. First, the configuration will be described. FIG. 1 shows an airbag device 101 according to Embodiment 1 of the present invention. As shown in FIGS. 2 and 3, the airbag device 101 includes an inflator 7 and an airbag (bag) 1, and is attached to the seatback 2 portion. The airbag 1 has partitions 8 and 9 therein, and the airbag 1 is divided into three compartments 1.
a, 1b, and 1c. The compartments 1a and 1b are configured such that gas directly enters from both ends 7a and 7b of the inflator 7, and the compartment 1c is provided with the compartments 1a and 1b.
Thus, the gas flows through the ventilation holes 10 and 11 provided in the partition walls 8 and 9. Also, the partition 8
And 9 are provided in front of the airbag 1 in the vehicle, and gas does not flow into the compartment 1c during the deployment of the airbag as shown in FIGS.
The compartment 1c extends forward while maintaining a thin shape so as to be suspended by the deployment of the compartments 1a and 1b. And FIG.
As shown in FIG. 8, when the compartments 1a and 1b have expanded to some extent, the ventilation holes 10 and 11 begin to appear.
As shown in FIG.
c, the compartment 1c expands.

Next, the operation will be described. In the case of a vehicle side collision or the like, as shown in FIGS. 12 and 13, when the occupant P is in a rough posture inclined slightly inside the door, the compartments 1 a and 1 b of the airbag 1 slightly inflate forward of the vehicle. The compartment 1b further extends while entering the gap between the inside of the door 6 and the substantially waist to chest (flank) of the occupant P, and at substantially the same time, the compartment 1a.
Expands and expands while entering the gap between the window glass and the approximate head of the occupant P. At this time, the compartment 1c does not expand and the compartment 1a
And 1b, and slightly extends forward of the vehicle.

Next, due to the inflation of the compartments 1a and 1b, the occupant P moves slightly inside the door due to the bag reaction force.
A gap is formed between the occupant P's shoulder and chest and the inside of the door 6, and FIG.
4. As shown in FIG. 15, when the airbag compartments 1a and 1b are further inflated and extended forward of the vehicle, the compartment 1c is suspended, and the airbag compartments 1c and 1b are suspended from the shoulders to the chest of the occupant P and the gap inside the door 6. Entry and simultaneous inflation. FIG. 16 shows the process of inflation when the bag is deployed.

As described above, the airbag 1 can restrain the occupant substantially from the head to the waist. Also, as shown in FIG. 17, by gradually increasing the area or the number of the ventilation holes 10 and 11 provided in the partition walls 10 and 11 toward the front of the vehicle, the internal pressure of the airbag compartment 1c is controlled. By simultaneously applying a reaction force to the shoulder to the chest of the occupant P and the shoulder to the chest of the occupant P while entering the gap inside the door 6, the insertion of the compartment 1c can be further facilitated.

Embodiment 2 will be described. FIG. 18 shows Embodiment 1 of the present invention provided on a vehicle body-side center pillar. In this case, the same effect can be obtained.

Embodiment 3 will be described. FIG. 19 shows Embodiment 1 of the present invention provided inside a vehicle body side door. In this case, the same effect can be obtained.

[0013]

As described above, according to the present invention, an integrated airbag that covers substantially the head to the waist includes a means for detecting a collision, and an airbag portion that protects the substantially head. An airbag portion for protecting substantially the shoulder to the chest and an airbag portion for protecting the substantially chest to the waist at least divided into three, and an airbag portion for substantially protecting the head and an airbag portion for substantially protecting the chest to the waist. Inflated almost simultaneously, and then inflated the airbag portion that protects the shoulder to chest, so in the case of a side collision, etc., if the occupant takes a rough posture slightly inclined to the inside of the door, The airbag that protects the head and the airbag that protects the chest and waist begin to expand while inflating slightly to the front of the vehicle, and the airbag that protects the chest and waist is about the inside of the door and the occupant. waist -The airbag portion that extends while entering the gap between the chest (flank) and at the same time protects the head substantially extends and inflates while entering the gap between the window glass and the head of the occupant. Further, when the airbag portion for protecting the substantially head and the airbag portion for substantially protecting the chest to the waist are inflated, the occupant slightly moves to the inside of the door due to the bag reaction force, so that there is a gap between the occupant's shoulder to the chest and inside the door. Since the airbag portion that protects the shoulder-chest region can extend and inflate into the gap, the head- waist region of the occupant can be covered and protected by the airbag. A partition is provided for the airbag portion for protecting the substantially head portion, the airbag portion for protecting the substantially shoulder portion to the chest portion, and the airbag portion for protecting the substantially chest portion to the waist portion. Since the air hole portion is provided with the pores, the air bag portion protecting the head and the air bag portion protecting the chest to the waist are inflated, and then the air bag portion protecting the shoulder to the chest can be inflated. can get. Since the area or the number of ventilation holes provided in the partition walls is gradually increased toward the front of the vehicle, by controlling the internal pressure of the airbag portion that protects substantially the shoulder to the chest, the occupant's shoulder to the chest can be controlled. By simultaneously applying a reaction force to the shoulder to the chest of the occupant while entering the gap inside the door, an effect is obtained that the airbag portion for substantially protecting the shoulder to the chest can be easily inserted.

[Brief description of the drawings]

FIG. 1 is a diagram showing an airbag device according to a first embodiment of the present invention.

FIG. 2 is a front view of the airbag according to the first embodiment of the present invention.

FIG. 3 is a side view of the airbag according to the first embodiment of the present invention.

FIG. 4 is a front view showing the airbag according to the first embodiment of the present invention during deployment;

FIG. 5 is a side view of the airbag according to the first embodiment of the present invention during deployment.

FIG. 6 is a perspective view showing the airbag according to the first embodiment of the present invention during deployment;

FIG. 7 is a front view showing the airbag according to the first embodiment of the present invention during deployment;

FIG. 8 is a side view of the airbag according to the first embodiment of the present invention during deployment.

FIG. 9 is a front view showing a state where the airbag according to the first embodiment of the present invention is opened.

FIG. 10 is a perspective view showing an open state of the airbag according to the first embodiment of the present invention.

FIG. 11 is a perspective view showing an open state of the airbag according to the first embodiment of the present invention.

FIG. 12 is a side view showing the deployed state of the airbag when the occupant is in a rough state inclined slightly inside the door according to the first embodiment of the present invention.

FIG. 13 is a front view showing the deployed state of the airbag when the occupant is in a rough state inclined slightly inside the door according to the first embodiment of the present invention.

FIG. 14 is a side view showing the deployed state of the airbag according to the first embodiment of the present invention when the occupant is in a rough state inclined slightly inside the door.

FIG. 15 is a front view showing the deployed state of the airbag according to the first embodiment of the present invention when the occupant is in a rough state inclined slightly inside the door.

FIG. 16 is a side view showing an inflation process of the airbag according to the first embodiment of the present invention when the occupant is in a rough state inclined slightly inside the door.

FIG. 17 is an operation diagram of the airbag device according to the first embodiment of the present invention.

FIG. 18 is a side view showing an attached state of the airbag device according to the second embodiment of the present invention.

FIG. 19 is a side view showing an attached state of the airbag device according to the third embodiment of the present invention.

FIG. 20 is a left side view of a vehicle body side portion of an airbag device according to a conventional example as viewed from the outside.

FIG. 21 is an explanatory diagram showing a deployed state of an airbag device according to a conventional example.

FIG. 22 is an explanatory view showing an airbag device according to a conventional example.

FIG. 23 is an explanatory diagram of a case where an airbag device according to a conventional example is mounted on a seat.

FIG. 24 is an explanatory view showing a side collision in an airbag device according to a conventional example.

FIG. 25 is an explanatory diagram showing a timing at which the inside of a door interferes with an occupant in a vehicle side collision in an airbag device according to a conventional example.

FIG. 26 is an explanatory view showing a side collision in an airbag device according to a conventional example.

FIG. 27 is an explanatory diagram showing a timing at which the inside of a door interferes with an occupant in a vehicle side collision in an airbag device according to a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 airbag 1a compartment 1b compartment 1C compartment 2 seat back 3 head restraint 6 door 7 inflator 8 partition 9 partition 10 ventilation hole 11 ventilation hole 101 airbag device

Claims (3)

[Claims] 1. A vehicle which is provided on a side portion of a seat and a side portion of a vehicle body,
By detecting impact force in the vehicle width direction, an inflatable airbag that covers the occupant's approximate head to waist, which expands and deploys, an airbag portion that substantially protects the integrated airbag from the head,
At least three in the height direction include an airbag portion that protects substantially the shoulder to the chest and an airbag portion that protects the substantially chest to the waist.
It is characterized by dividing and inflating the airbag part for protecting the head substantially and the airbag part for protecting the chest to waist substantially simultaneously, and then inflating the airbag part for protecting the shoulder to chest substantially. Airbag device. 2. The airbag device according to claim 1, wherein the airbag portion protects substantially the head, the airbag portion protects substantially the shoulder to the chest, and the airbag portion protects the substantially chest to the waist. An airbag device, wherein a ventilation hole is provided in a partition provided for dividing the vehicle toward the front of the vehicle. 3. The airbag device according to claim 1, wherein the airbag portion protects substantially the head, the airbag portion protects substantially the shoulder to the chest, and the airbag portion protects the substantially chest to the waist. An airbag device, characterized in that a ventilation hole is provided in a partition wall provided for division, and the ventilation hole area is gradually increased toward the front of the vehicle.