JP2020050280A - Airbag device - Google Patents

Abstract

To provide an airbag device which enables an airbag to expand stably while increasing a bag capacity and a protection range of the airbag.SOLUTION: In an airbag device, an airbag 101 is stored in an airbag storing door trim 40a at the vehicle cabin inner side which is disposed below a triangle window 12. When expansion gas is supplied to the airbag 101 by an inflator 102, an opening of the triangle window 12 is formed by expansion force of the airbag 101. Then, the air bag 101 expands and inflates from the vehicle cabin inner side to the vehicle cabin outer side through the opening toward the front surface side of the front pillar 5 while engaging with the front pillar 5.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an airbag device including an airbag that is deployed and inflated on the front side of a front pillar of a vehicle.

  BACKGROUND ART Conventionally, when a person to be protected such as a pedestrian collides with a vehicle, an airbag device is known which deploys an airbag in front of a front pillar of the vehicle to inflate and protect the person to be protected. (For example, see Patent Document 1).

JP 2010-235007 A

  However, the airbag device disclosed in Patent Literature 1 is stored in a storage space outside the vehicle, and the storage space of the airbag device is stored in a vacant space outside the vehicle while suppressing a decrease in the strength of the structure of the vehicle body. It is difficult to secure a large airbag, and it is also difficult to extend the protection range of the airbag to the front pillar.

  In particular, in the case where the person to be protected that collided with the vehicle is a cyclist running on a bicycle, the position of the center of gravity of the cyclist is high, and the relative speed between the bicycle and the vehicle is also high. Not only is the trajectory unstable, but also the flight distance is long, and it is desired to collide with the front pillar in various directions and velocities, thereby increasing the protection range of the airbag with respect to the front pillar. For example, a pedestrian can assume a flight trajectory in which the lower body is paid by a vehicle bumper and makes a secondary collision with a hood or a cowl, and then a tertiary collision with a windshield or a front pillar. A flight trajectory that directly collides with the windshield or the upper end side of the front pillar without secondary collision can also be assumed. Thus, considering that the person to be protected is a cyclist, it has been desired to increase the protection range of the airbag with respect to the front pillar.

  Further, when the protection range of the airbag with respect to the front pillar is increased, it has been desired that the airbag can be stably deployed.

  The present invention is to solve the above-mentioned problem, and in an airbag device for a front pillar of a vehicle, provides an airbag device that stably deploys an airbag while increasing a bag capacity and a protection range of the airbag. The purpose is to do.

  In order to solve the above problem, the present invention relates to an airbag device including an airbag that is deployed and inflated on the front side of a front pillar of a vehicle, and an inflator that supplies an inflation gas that inflates the airbag. The vehicle is configured such that a partition window that does not move up and down and that is arranged below the front pillar can be opened or removed so that an opening can be formed at least on an upper side, and a vehicle that is arranged below the partition window At least the airbag is stored in the storage section on the indoor side, and when the inflator is supplied with the inflation gas, the airbag forms the opening of the partition window by the inflation force of the airbag, From the inside of the vehicle to the outside of the vehicle via the opening, while locking to the front pillar, Serial, characterized in that it expands to expand on the front side of the front pillar.

  In addition, the airbag has at least an inflatable main body that covers the front side of the front pillar, and a pillar locking part that locks the front pillar, and the pillar locking part is locked to the front pillar. However, it is preferable that the inflation main body part expands and expands on the front side of the front pillar.

  Further, the airbag has at least an inflation main body that covers the front side of the front pillar, and a restricting portion that restricts movement of the inflating main body outward in the vehicle width direction. It is preferable that the expansion body expands to the front side of the front pillar and expands while restricting the movement of the main body outward in the vehicle width direction.

  Further, it is preferable that the restricting portion of the airbag restricts the movement of the inflatable main body outward in the vehicle width direction by abutting on a door mirror of the vehicle.

  Further, the partition window has a lower end side pivotally supported, and an upper end side is restricted to an opening up to a predetermined angle, and the restricting portion of the airbag contacts the partition window, whereby the vehicle of the inflatable main body is rotated. It is preferable to restrict the outward movement in the width direction.

  Preferably, the partition window is disposed above a side door, and the storage portion is a door trim on a side of the side door in the vehicle compartment.

  Further, it is preferable that the partition window is disposed above a fender, and the storage portion is an inner trim on a vehicle cabin side of the fender.

  ADVANTAGE OF THE INVENTION According to this invention, in an airbag apparatus with respect to the front pillar of a vehicle, it is possible to stably deploy the airbag while increasing the bag capacity and the protection range of the airbag.

1 is a front view of a vehicle provided with an airbag device according to a first embodiment of the present invention. It is a side view of the vehicle provided with the airbag device of a 1st embodiment. FIG. 2 is an enlarged view of the vicinity of a front pillar as viewed from the interior of a vehicle equipped with the airbag device of the first embodiment. FIG. 2 is a schematic cross-sectional view of the periphery of the door trim according to the first embodiment, and is a cross-sectional view taken along line AA of FIG. 1. FIG. 3 is a schematic vertical sectional view of the periphery of the door trim of the first embodiment, and is a BB sectional view of FIG. 2. It is a perspective view of the airbag which covers the front pillar of 1st Embodiment. It is a side view of the vehicle provided with the airbag device which is a 2nd embodiment of the present invention. FIG. 5 is an enlarged view of the vicinity of a front pillar as viewed from the interior of a vehicle equipped with an airbag device according to a second embodiment.

[First Embodiment]
The airbag device of the present invention covers the front side of the front pillar in order to protect a person to be protected that has collided with a vehicle.
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a front view of a vehicle 1 provided with the airbag device E of the first embodiment, and FIG. 2 is a side view of the vehicle 1 provided with the airbag device E of the first embodiment. The airbag device E of the present invention is disposed symmetrically with respect to the vehicle, as shown in FIG. 1, and the description will be focused on one airbag device, and the other airbag device will be described in detail. Description is omitted.

  As shown in FIGS. 1 and 2, a vehicle 1 equipped with an airbag device E includes a front fender 2, a front hood 3, a roof 4 partitioning an upper surface of a vehicle compartment, a front pillar 5, and side surfaces of the vehicle compartment. It is composed of a main body whose outer shell is the side door 6 and the like that are partitioned.

  The front pillars 5 fix both side edges of a windshield 10 that defines the front of the passenger compartment, and support the roof 4 above. Although not shown, the roof 4 is disposed in addition to the front pillar 5 disposed on the front side of the vehicle compartment, the front pillar disposed on the center side of the vehicle compartment, and the rear side of the vehicle compartment. It is also supported by rear pillars.

  The side door 6 holds an ascending / descending side glass 11 and a non-ascending / descending triangular window 12 as a “partition window”, and a door mirror 20 is attached to an upper portion of the side door 6.

  The lower end of the triangular window 12 is pivotally supported by the supporting portion 6a of the side door 6, and the other outer peripheral edge is fitted into the fitting portion 6b of the side door 6 (see FIG. 5). For this reason, the triangular window 12 is normally configured so that it cannot be opened and closed. However, as described later, the fitting portion of the outer peripheral edge of the triangular window 12 is broken by the pressure of the airbag 101 at the time of collision, and at least The upper side is configured to be openable.

  The side glass 11 and the triangular window 12 are made of transparent glass, but may be made of rigid transparent resin such as polycarbonate.

  In the first embodiment, the airbag device E is stored inside a door trim 40 (see FIGS. 3 and 4) as a “storage portion” on the vehicle interior side disposed immediately below the triangular window 12.

  FIG. 3 is an enlarged view of the vicinity of the front pillar 5 as viewed from the passenger compartment of the vehicle 1 including the airbag device E.

  As shown in FIG. 3, a resin pillar trim 30 is attached to the front pillar 5 on the vehicle interior side.

  A door trim 40 is attached to the side of the side door 6 inside the vehicle. The door trim 40 is located immediately below the triangular window 12 and houses an airbag storage door trim 40a that houses the airbag device E, and is located immediately below the side glass 11 and houses a lifting mechanism for the side glass 11 and the like. And a door trim 40b.

  In the first embodiment, the door trim 40 is divided into the door trim 40a for storing the airbag and the normal door trim 40b. However, the door trim 40 collectively stores the airbag device E and the elevating mechanism of the side glass 11. May be configured.

  FIG. 4 is a schematic cross-sectional view of the periphery of the door trim 40, and is a cross-sectional view taken along the line AA of FIG.

  As shown in FIG. 4, the front pillar 5 is formed by spot welding a plurality of sheet metal parts in order to form a pillar having a closed cross section. The front pillar 5 is formed by spot welding a plurality of sheet metal parts, and has a pillar flange portion 5 a for fixing the front glass 10 and the like via an adhesive 31.

  A water guide 32 for preventing rainwater from entering is provided in a gap between the windshield 10 and the front pillar 5 and on the front side of the pillar flange portion 5a. The pillar trim 30 is attached so as to cover the vehicle interior side of the front pillar 5 and the pillar flange portion 5a.

  The airbag device E includes an airbag 101 having flexibility and an inflator 102 for supplying an inflation gas for inflating the airbag 101, and is disposed inside the airbag storage door trim 40a.

  The inflator 102 is disposed inside the airbag storage door trim 40a, but is not limited to being disposed inside the airbag storage door trim 40a. 30 or the like.

  FIG. 5 is a schematic vertical cross-sectional view of the periphery of the door trim 40, and is a BB cross-sectional view of FIG. FIG. 5A shows a state before the airbag 101 is deployed, and FIG. 5B shows a state after the airbag 101 is deployed.

  As shown in FIG. 5A, the airbag 101 is folded in a plurality of forms, and has an airbag base portion 101a that plays a role of pushing the airbag 101 upward, and the airbag 101 is moved outward in the vehicle width direction. An airbag supporting portion 101b serving to support the airbag 101 after being advanced and deployed, and an airbag body portion 101c serving as an “inflation body portion” serving to cover the front side of the front pillar 5. I have. Further, the airbag supporting portion 101b has a pillar locking portion 101d that forms a concave portion when the airbag is deployed and locks the front pillar 5.

  As shown in FIG. 5A, in the airbag 101, when viewed from the side, the airbag base portion 101a is folded in a bellows shape, and the airbag support portion 101b is a fan so as to face outward in the vehicle width direction. The airbag body 101c is folded in a fan shape inward in the vehicle width direction. Further, at least the airbag body 101c is folded in a bellows shape when viewed from above, as shown in FIG.

  The folding of the airbag 101 is not limited to the configurations shown in FIGS. 4 and 5A, and if the same role is fulfilled, the bag-like configuration of the airbag itself may be changed, or the airbag 101 may be tethered at a predetermined deployment time. The limit tension of the tether such as breakage may be adjusted, or a regulating member for regulating the deployment direction may be provided.

  When the inflation gas is supplied to the airbag 101 by the inflator 102, the airbag base portion 101a pushes the airbag support portion 101b and the airbag body portion 101c upward, as shown in FIG. Blow off the cover of the storage door trim 40a.

  As shown in FIG. 5B, when the airbag supporting portion 101b is pushed up by the airbag base portion 101a, the concave portion of the pillar locking portion 101d locks on the rear side of the front pillar 5, and the vehicle width direction. Go outside. The airbag support portion 101b that has advanced outward in the vehicle width direction destroys the fitting portion 6b of the side door 6 while maintaining the engagement with the front pillar 5, and rotates the triangular window 12 toward the outside of the vehicle compartment. After that, the airbag body 101c is supported.

  Here, when the triangular window 12 is rotated toward the outside of the cabin, an opening is formed on the upper end side of the triangular window 12. When the triangular window 12 contacts and is supported by the door mirror 20, the rotation of the triangular window 12 is also restricted.

The airbag support portion 101b can support the airbag main body portion 101c by contacting the triangular window 12 supported by the door mirror 20. Further, in addition to the airbag supporting portion 101b abutting on the triangular window 12, the pillar locking portion 101d is locked on the front pillar 5, thereby restricting the movement of the airbag body portion 101c to the outside in the vehicle width direction. be able to.
In the present embodiment, the airbag supporting portion 101b (pillar locking portion 101d) constitutes a "restriction portion" that restricts the movement of the airbag body portion 101c to the outside in the vehicle width direction.

  As shown in FIG. 5 (b), the airbag body 101c moves inward in the vehicle width direction while the pillar locking portion 101d locks on the rear side of the front pillar 5 and moves from the rear side of the front pillar 5 A first deployment covering the front side is performed. After that, the airbag body 101c performs a second deployment in which the front pillar 5 is deployed from the lower end side to the upper end side, and covers the entire front side of the front pillar 5.

  The first expansion is performed by folding the airbag body 101c in a fan shape shown in FIG. 5A, and the second expansion is performed by the bellows-shaped folding of the airbag body 101c shown in FIG. However, as described above, the present invention is not limited to the forms shown in FIGS. 4 and 5A, and may be developed by roll-shaped folding.

  FIG. 6 is a perspective view of the airbag 101 covering the front pillar 5.

  As shown in FIG. 6, the airbag body 101c of the airbag 101 covers the entire front side of the front pillar 5 while the pillar locking portion 101d is locked to the front pillar 5, and the airbag support portion 101b supports the airbag body 101c by contacting the triangular window 12, thereby restricting the movement of the airbag body 101c outward in the vehicle width direction.

  As described above, since the airbag device E of the present invention is stored inside the door trim 40 (airbag storage door trim 40a) on the "inside of the vehicle" side, it can be stored in a larger storage space as compared with the related art. Thus, the bag capacity and protection range of the airbag 101 can be expanded.

  The airbag device E of the present invention covers the front side of the front pillar 5. However, since the airbag 101 deploys from the triangular window 12 “below the front pillar 5”, the front pillar 5 The distance to the front surface is short, and the deployment time until the airbag 101 covers the front side of the front pillar 5 can be shortened.

  Furthermore, since the airbag device E of the present invention is stored inside the airbag storage door trim 40a immediately below the "triangular window 12", the door trim 40 has a lifting mechanism or the like like the side glass 11. Thus, a large storage area for the airbag can be secured.

  Furthermore, since the airbag device E of the present invention has the "pillar locking portion 101d", it can be stably deployed toward the front side of the front pillar 5.

  Further, since the airbag device E of the present invention has the “airbag support portion 101b”, the airbag device E performs stable deployment toward the front side of the front pillar 5 and holds the deployed airbag 101. be able to.

[Second embodiment]
In the first embodiment described above, the triangular window 12 is attached to the side door 6 as shown in FIGS. 1 and 2, but the triangular window 12 may be attached to the upper part of the front fender 2.

In the second embodiment, the triangular window 13 is attached to the upper part of the front fender 2, and the airbag device E is stored inside an inner trim 45 different from the door trim 40.
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. 7 and 8, but the same parts as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted.

  FIG. 7 is a side view of a vehicle provided with the airbag device E of the second embodiment, and FIG. 8 is a view of the front pillar 5 viewed from the vehicle interior of the vehicle provided with the airbag device E of the second embodiment. It is an enlarged view of the periphery.

  As shown in FIG. 7, a triangular window 13 is attached to an upper portion of the front fender 2, and the side door 14 holds the vertically movable side glass 11 without attaching the triangular window 13, and a door mirror 20 is provided. Installed.

  As in the first embodiment, the lower end of the triangular window 13 is pivotally supported by the front fender 2, and the upper end of the triangular window 13 is fitted and attached to the front pillar 5.

  As shown in FIG. 8, the airbag device E is stored inside the inner trim 45 as a “storage unit” below the front pillar 5 and the triangular window 13. The configuration and the way of deployment of the airbag device E are the same as those of the first embodiment, and therefore the description is omitted.

  As described above, even when the airbag device E is stored inside the inner trim 45 different from the door trim 40, the same effect as in the first embodiment described above can be obtained.

[Other Modifications]
In the above embodiment, the triangular windows 12 and 13 are configured in a triangular shape, but are not limited to a triangular shape, and may be a rectangular shape such as a quadrangle or a round shape.

  Further, in the above embodiment, the lower ends of the triangular windows 12 and 13 are pivotally supported. However, the present invention is not limited to the case where the lower ends are pivotally supported. You may comprise. That is, if even the upper ends of the triangular windows 12, 13 are not supported, an opening can be formed at least above the triangular windows 12, 13, so that one end except the upper ends of the triangular windows 12, 13 is supported. You may comprise.

  Furthermore, in the above-described embodiment, one end of the triangular windows 12, 13 is pivotally supported so that the triangular windows 12, 13 abut on the door mirror 20 and are supported. The stopper 13 that restricts the rotation of the triangular windows 12 and 13 at a predetermined angle or more without providing the stopper 13 to contact the door mirror 20 may be provided. This is particularly effective when the vehicle is not provided with a door mirror.

  Furthermore, in the above-described embodiment, one end side of the triangular windows 12 and 13 is pivotally supported. However, the triangular windows 12 and 13 are not pivotally supported, and all the outer peripheral edges of the triangular windows 12 and 13 are supported. May be fitted into a predetermined fitting portion.

  As described above, when all the outer peripheral edges of the triangular windows 12, 13 are fitted into the predetermined fitting portions, the triangular windows 12, 13 are removed by the pressure of the airbag 101 at the time of collision, What is necessary is just to comprise so that the triangular windows 12 and 13 may be destroyed.

  When the triangular windows 12 and 13 are removed or the triangular windows 12 and 13 are configured to be broken, the airbag supporting portion 101b abuts on the door mirror 20 to move the airbag body 101c. The airbag body 101c may be supported to restrict the movement of the airbag body 101c outward in the vehicle width direction.

  As described above, the airbag device E of the present invention, as the airbag device E for the front pillar 5 of the vehicle 1, can stably deploy the airbag while increasing the bag capacity and the protection range of the airbag 101. be able to.

  1: vehicle, 2: front fender, 5: front pillar, 6: side door, 6a: support portion, 6b: fitting portion, 12, 13: triangular window (partition window), 14: side door, 20: door mirror, 40: door trim, 40a: door trim for storing an airbag (storage portion), 40b: normal door trim, 45: inner trim (storage portion), 101: airbag, 101a: airbag base portion, 101b: airbag support portion (restriction portion) ), 101c: airbag body (inflation body), 101d: pillar locking part (locking part), 102: inflator, E: airbag device.

Claims (7)

An airbag device including an airbag that expands and expands on the front side of a front pillar of a vehicle, and an inflator that supplies an inflation gas that inflates the airbag,
The vehicle is configured such that a partition window that does not move up and down disposed below the front pillar can be opened or removed so that an opening can be formed at least on an upper side,
At least the airbag is stored in a storage portion on the vehicle interior side arranged below the partition window,
The airbag,
When inflation gas is supplied by the inflator,
The opening of the partition window is formed by the inflation force of the airbag,
From the inside of the vehicle compartment to the outside of the vehicle compartment via the opening, while being locked to the front pillar, it expands and expands to the front side of the front pillar,
An airbag device characterized by the above-mentioned. The airbag,
An inflatable main body that covers the front side of the front pillar,
And at least a pillar locking portion that locks to the front pillar,
While the pillar locking portion is locked to the front pillar, the inflatable main body is expanded and expanded to the front side of the front pillar,
The airbag device according to claim 1, wherein: The airbag,
An inflatable main body that covers the front side of the front pillar,
A restricting portion that restricts movement of the inflatable body to the outside in the vehicle width direction,
While the restricting portion restricts the movement of the inflatable body to the outside in the vehicle width direction, the inflatable body is expanded and inflated to the front side of the front pillar,
The airbag device according to claim 1 or 2, wherein: The regulation part of the airbag,
By abutting on a door mirror of the vehicle, the movement of the inflatable body to the outside in the vehicle width direction is regulated,
The airbag device according to claim 3, wherein: The partition window, the lower end side is pivotally supported, the upper end side is regulated by an opening up to a predetermined angle,
The regulation part of the airbag,
By abutting on the partition window, the movement of the inflatable body to the outside in the vehicle width direction is regulated,
The airbag device according to claim 3, wherein: The partition window is disposed above the side door,
The storage section is a door trim on the side of the vehicle interior of the side door,
The airbag device according to any one of claims 1 to 5, wherein: The partition window is located above the fender,
The storage unit is an inner trim on the vehicle cabin side of the fender.
The airbag device according to any one of claims 1 to 5, wherein: