JP5647653B2 - Airbag arrangement structure - Google Patents

Description

  The present invention relates to an airbag arrangement structure, and more particularly to an arrangement structure of a curtain airbag device provided on a side of a vehicle body.

  2. Description of the Related Art Conventionally, curtain airbags have been developed that protect passengers by deploying in a vehicle compartment along the side of a vehicle body at the time of a vehicle side collision.

  For example, in Patent Document 1, as shown in FIG. 5A, when the airbag 103 accommodated between the roof side rail 101 and the roof head lining 102 is deployed, the airbag 103 being deployed is placed in the passenger compartment. The deployment assisting member 104 that guides and guides the roof side rail 101 is attached to the inner panel 101a. The deployment assisting member 104 includes a guide wall 105 that guides the airbag 103 to the passenger compartment and a reinforcing rib. 106, and at least when the airbag 103 is deployed, it is disclosed that the deployment assisting member 104 is attached so that the reinforcing rib 106 contacts the inner panel 101a. According to this, it is suppressed that the guide wall part 105 moves to the inner panel 101a side at the time of deployment of the airbag 103, and deterioration of the guide performance for guiding the airbag 103 being deployed to the inside of the vehicle is suppressed.

JP 2011-105079 A

  However, the airbag device 100 described in Patent Document 1 has the following problems. That is, as shown in FIG. 5B, a center pillar 107 is continuous below the roof side rail 101 to which the airbag apparatus 100 is attached, and a garnish 108 (pillar trim) is provided on the inner side of the center pillar 107. ) Is installed. When the vehicle encounters a side collision, the center pillar 107 and the garnish 108 may be pushed by the collision object and displaced to the inside of the vehicle. At this time, when the displacement of the center pillar 107 and the garnish 108 is larger than the displacement of the roof side rail 101 and the airbag device 100, the garnish 108 enters the deployment range of the airbag 103 and the airbag 103 is caught by the garnish 108. Thus, there is a risk that stable deployment of the airbag 103 may be hindered.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an airbag arrangement structure capable of stably deploying an airbag regardless of the degree of garnish penetration.

The present invention includes an airbag that is extended on the vehicle interior side of a vehicle body and that is inflated and deployed in a vehicle interior by introducing gas, a protector disposed between the vehicle body side portion and the airbag, and the airbag. An airbag arrangement structure comprising roof lining that covers from the inside of the vehicle and a garnish that covers the pillar portion continuous to the side of the vehicle body from the inside of the vehicle, wherein the garnish extends toward the airbag side. The protector has a rib projecting on the side of the vehicle body, and the extension portion is in contact with the rib at the time of a side collision of the vehicle. A mounting bracket that is disposed between a side portion and the rib and that attaches the protector to the vehicle body side portion is provided in an area excluding a continuous portion of the vehicle body side portion and the pillar portion. Features .

According to such a configuration, the extended portion of the garnish is disposed between the vehicle body side portion and the rib so that the garnish is brought into contact with the rib at the time of a side collision of the vehicle. If it moves, an extending part will move with a garnish and an extending part will contact | abut to the rib of a protector. Thereby, since a protector and an airbag are pushed by the extension part and move following a garnish, the change of the positional relationship of a garnish and an airbag can be suppressed. As a result, the airbag is less likely to be caught by the garnish regardless of the degree of garnish penetration, and the airbag can be stably deployed.
In addition, the mounting bracket for attaching the protector to the vehicle body side is provided in an area excluding the continuous portion of the vehicle body side portion and the pillar portion. Therefore, the airbag and the protector are provided in the continuous portion of the vehicle body side portion and the pillar portion. Is easy to move inside the car.

  ADVANTAGE OF THE INVENTION According to this invention, the airbag arrangement | positioning structure which can expand | deploy an airbag stably irrespective of the penetration | invasion degree of garnish can be provided.

1 is an overall view of an airbag arrangement structure according to the present embodiment. It is the perspective view which looked at the continuous part of a roof side rail and a center pillar from diagonally lower side. FIG. 3 is a cross-sectional view taken along arrow III-III in FIG. 1. FIG. 3 is a cross-sectional view taken along arrow III-III in FIG. It is sectional drawing of the conventional airbag arrangement | positioning structure, (a) represents normal time, (b) represents the time of a side collision, respectively.

  An embodiment of the present invention will be described in detail with reference to FIGS. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. Moreover, when explaining a direction, it demonstrates based on the front-back, left-right, up-down seen from the driver of the vehicle. The vehicle width direction and the left-right direction are synonymous.

  As shown in FIG. 1, the airbag arrangement structure according to the present embodiment is configured so that the airbag 21 of the curtain airbag device 20 is placed on the vehicle body side, for example, when another vehicle collides with the side of an automobile that is a vehicle. It has a function of smoothly inflating and expanding in the passenger compartment R along the portion 10. The airbag arrangement structure includes a vehicle body side portion 10, an airbag 21 extending inside the vehicle body side portion 10, a protector 30 disposed between the vehicle body side portion 10 and the airbag 21, and an airbag. A roof lining 18 (see FIG. 3) that covers 21 from the inside of the vehicle and a garnish 50 that covers the center pillar 14 that continues to the vehicle body side portion 10 from the inside of the vehicle are provided. Since the airbag arrangement structure is a left-right symmetrical structure, in the following description, the structure on the right side of the vehicle body will be described as an example, and the description on the left side of the vehicle body will be omitted.

  As shown in FIG. 1, the vehicle body side portion 10 is a frame member that forms the left and right side portions of the automobile, and mainly includes a roof side rail 11 and a front pillar 12 that is continuous with the front end of the roof side rail 11. A rear pillar 13 that is continuous to the rear end of the roof side rail 11 and a center pillar 14 that is continuous near the center in the front-rear direction of the roof side rail 11 are provided. A curtain airbag device 20 described later is installed inside the roof side rail 11, the front pillar 12, and the rear pillar 13. The vehicle body side portion 10 is provided with a door opening 15, and the door 16 is provided with the door opening 15.

  A roof panel 17 is installed between the left and right roof side rails 11 (only the right side is shown), and a roof lining 18 (see FIG. 3) is installed on the inner side (lower side) of the roof panel 17. . The roof lining 18 covers the curtain airbag device 20 on the side of the roof side rail 11. A garnish (not shown) is installed inside the front pillar 12 and the rear pillar 13 to cover the curtain airbag device 20. For convenience of explanation, the garnish and roof lining 18 of the front pillar 12 and the rear pillar 13 are omitted in FIG. Further, a floor panel 19 is installed below the left and right vehicle body side portions 10, and a seat S is installed on the floor panel 19.

  Here, the cross-sectional structure of the vehicle body side portion 10 will be described taking the roof side rail 11 and the center pillar 14 as an example. As shown in FIG. 3, the roof side rail 11 and the center pillar 14, which are part of the vehicle body side portion 10, are an outer panel 10 a on the vehicle outer side, an inner panel 10 b on the vehicle inner side, and a stiffener 10 c disposed between the two. And are formed into a hollow structure. A garnish 50, which is a decorative member, is installed inside the center pillar 14 and covers the inner panel 10b. The garnish 50 will be described in detail later.

  As shown in FIGS. 1, 2, and 3, the curtain airbag device 20 is a device that protects an occupant by deploying an airbag 21 along the vehicle body side portion 10 at the time of a side collision of an automobile. The curtain airbag device 20 includes an airbag 21, an inflator 22 that introduces gas into the airbag 21, a mounting bracket 23 that attaches the airbag 21 to the vehicle body side portion 10, and a protector 30 that protects the airbag 21. Has mainly.

  The airbag 21 is a bag-like member that expands and deploys in a curtain shape by the introduction of gas. The airbag 21 is deployed between the window glass of the vehicle body side portion 10 and the seat S to protect the occupant as indicated by a virtual line (two-dot chain line) in FIG. The airbag 21 is attached to the side surfaces on the vehicle interior side of the front pillar 12, the roof side rail 11, and the rear pillar 13 in a state where the airbag 21 is folded in the longitudinal direction. Although not shown, the airbag 21 is folded, for example, in a bellows shape or a spiral shape in a sectional view so as to be easily deployed. The folded airbag 21 is bundled with a plurality of tapes 21a. Moreover, the airbag 21 is attached to the roof side rail 11 or the like via a plurality of attachment fittings 23 arranged at a predetermined interval in the front-rear direction. The airbag 21 is arranged in a curved manner so as to protrude toward the vehicle inner side at a continuous portion of the roof side rail 11 and the center pillar 14 (see FIG. 2).

  The inflator 22 is a device that inflates and deploys the airbag 21 by injecting gas into the airbag 21 based on a collision detection signal from an acceleration sensor (not shown) or the like. The inflator 22 is fixed to the inner side of the rear pillar 13 and is connected to an introduction port 21 b provided on the rear end side of the airbag 21. The airbag 21 can be deployed by breaking the plurality of tapes 21a due to the gas pressure from the inflator 22.

  The protector 30 is a member that is interposed between the vehicle body side portion 10 and the airbag 21 and protects the airbag 21 from protrusions of the vehicle body side portion 10 and restricts the deployment direction of the airbag 21. The protector 30 includes a protector main body 31 that is substantially arc-shaped in cross-section and a plurality of ribs 32 that protrude from the outer side of the protector main body 31.

  The protector main body 31 is provided over substantially the entire length of the airbag 21 and covers the upper side of the airbag 21 and the outside of the vehicle. The protector body 31 restricts the airbag 21 from inflating and deploying to the upper side and the vehicle outer side, and guides the airbag 21 to deploy toward the lower side and the vehicle inner side. The protector body 31 is bundled together with the airbag 21 by a tape 21a. The protector main body 31 is attached to the roof side rail 11 and the like via a plurality of attachment fittings 23, similarly to the airbag 21. As shown in FIG. 2, the mounting bracket 23 is provided at a position away from the front and rear from the continuous portion of the roof side rail 11 and the center pillar 14. That is, the mounting bracket 23 is not provided at a continuous portion between the roof side rail 11 and the center pillar 14. Thereby, in the continuous part of the roof side rail 11 and the center pillar 14, the airbag 21 and the protector 30 are easily moved to the inside of the vehicle.

  The rib 32 is a flat plate-like portion that comes into contact with the extended portion 51 of the garnish 50, which will be described later, at the time of a side collision, and is formed in a substantially trapezoidal shape when viewed in the front-rear direction. The rib 32 protrudes from the side surface 31a on the vehicle exterior side of the protector body 31 at a portion corresponding to the continuous portion of the roof side rail 11 and the center pillar 14 (see FIG. 2). In the present embodiment, a plurality of ribs 32 are provided at intervals in the front-rear direction. As shown in FIG. 3, the lower end of the rib 32 is formed substantially flush with the lower end of the protector body 31. The end of the rib 32 on the vehicle outer side is inclined so as to be positioned on the vehicle inner side as it goes upward.

  The garnish 50 is a resin decorative member that covers the center pillar 14 from the inside of the vehicle. For example, the garnish 50 is fixed to the center pillar 14 with a clip or a tapping screw. The garnish 50 has an extending portion 51 extending toward the curtain airbag device 20 side (the upper side in the present embodiment) on the upper end side thereof.

  The extending portion 51 is a plate-like portion formed in a substantially J shape when viewed from the side, and abuts against the rib 32 of the protector 30 from the outside of the vehicle at the time of a side collision, thereby connecting the protector 30 and the airbag 21 to the garnish 50. In addition, it has a function of moving to the inside of the vehicle. The base portion 51 a of the extending portion 51 is continuous with the back side (the vehicle outer side) of the upper end portion 50 a of the garnish 50. An upper end portion 51 b of the extending portion 51 is disposed between the vehicle body side portion 10 and the rib 32. A protruding piece 51c extending in the horizontal direction is provided on the vehicle outer side of the intermediate portion of the extending portion 51. The upper end portion 51 b of the extending portion 51 is inclined substantially parallel to the end portion on the vehicle outer side of the rib 32. The upper end portion 51b of the extending portion 51 is separated from the end portion on the vehicle outer side of the rib 32 in a normal state. That is, a minimum clearance C necessary for assembling the garnish 50 is provided between the extending portion 51 and the rib 32.

  The airbag arrangement structure according to the present embodiment is basically configured as described above. Next, operations and effects of the airbag arrangement structure will be described in detail with reference to FIG. .

  As shown in FIG. 4, for example, when a collision load F acts on the center pillar 14 due to a side collision of another vehicle with a vehicle equipped with the airbag arrangement structure according to the present embodiment, the garnish 50 is moved together with the center pillar 14. It is displaced to. Since the roof side rail 11 is located above the center pillar 14, the amount of movement toward the vehicle interior is smaller than that of the center pillar 14.

  Moreover, gas is injected from the inflator 22 based on the collision detection signal from the acceleration sensor, and the airbag 21 begins to inflate. The tape 21a is broken by the inflation pressure of the airbag 21, and the roof lining 18 is pushed away, so that the airbag 21 starts to expand in the passenger compartment R and downward.

  When the garnish 50 moves to the vehicle inner side due to a side collision (see arrow Y1), the extended portion 51 of the garnish 50 abuts against the vehicle outer end of the rib 32 of the protector 30 and presses the protector 30 and the airbag 21 (arrow). Y2). When the protector 30 and the airbag 21 are pressed by the extending portion 51, the protector 30 and the airbag 21 move toward the vehicle interior following the amount of movement of the garnish 50 (see arrow Y3). Thus, according to the airbag arrangement structure according to the present embodiment, the protector 30 and the airbag 21 move to the inside of the vehicle together with the garnish 50, so that the positional relationship between the garnish 50 and the airbag 21 changes. Will be suppressed. Therefore, the airbag 21 can be stably inflated and deployed in the passenger compartment R without being caught by the garnish 50 at the time of a side collision.

  As described above, the airbag arrangement structure according to the present embodiment has been described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and may be appropriately selected without departing from the spirit of the present invention. Needless to say, it can be changed.

  For example, in the present embodiment, the extending portion 51 is provided in the garnish 50 that covers the center pillar 14 as the pillar portion. However, the present invention is not limited to this, and the front pillar 12 and the rear pillar 13 are provided. You may make it the structure which provides an extension part in the garnish (illustration omitted) to coat | cover. According to such a structure, the airbag 21 can be moved inside the vehicle together with the garnish of the front pillar 12 and the rear pillar 13 at the time of a side collision.

  In the present embodiment, the present invention is applied to a so-called coupe type vehicle, but the present invention is not limited to this, and the present invention is applied to other types of vehicles such as a one-box type, a wagon type, and a sedan type. It goes without saying that the invention may be applied.

DESCRIPTION OF SYMBOLS 10 Car body side part 11 Roof side rail 12 Front pillar 13 Rear pillar 14 Center pillar 20 Curtain airbag apparatus 21 Airbag 22 Inflator 23 Mounting bracket 30 Protector 31 Protector main body 32 Rib 50 Garnish 51 Extension part

Claims (4)

An airbag that extends inside the vehicle on the side of the vehicle body and inflates and deploys into the vehicle interior by the introduction of gas;
A protector disposed between the vehicle body side portion and the airbag;
Roof lining for covering the airbag from the inside of the vehicle;
A garnish that covers the pillar portion continuous to the vehicle body side portion from the inside of the vehicle;
An airbag arrangement structure comprising:
The garnish has an extending portion extending toward the airbag side,
The protector has a rib protruding from the vehicle body side,
The extending portion is disposed between the vehicle body side portion and the rib so as to come into contact with the rib at the time of a side collision of a vehicle ,
A mounting structure for attaching the protector to the vehicle body side portion is provided in an area excluding a continuous portion of the vehicle body side portion and the pillar portion . The airbag mounting structure according to claim 1, wherein the mounting bracket is mounted at a position separated forward or rearward from the continuous portion. 3. The airbag arrangement structure according to claim 1, wherein an upper end portion of the extending portion protrudes upward from an upper end of the rib. The said extension part presses the said rib at the time of the side collision of the said vehicle, The said airbag and the said protector move following the movement amount of the said garnish, The Claim 1 to Claim 3 characterized by the above-mentioned. The airbag arrangement structure according to any one of the preceding claims.

Images