JP4539419B2 - Curtain airbag device - Google Patents

Description

  The present invention relates to a curtain airbag device.

  2. Description of the Related Art A curtain airbag device that deploys a curtain-shaped airbag on the inner surface side of a side window glass in an emergency such as an automobile collision is known. This curtain airbag device absorbs an impact on the occupant during a side collision and prevents the occupant from jumping out of the vehicle during a rollover. An example of such a curtain airbag device is disclosed in Patent Document 1 below.

JP 2002-187518 A

The curtain airbag device disclosed in Patent Document 1 includes a cabin side when the bag body 10 is deployed by an inner surface side member 48 perpendicular to the flat plate portion 41 of the hanger member 40 for attaching the curtain airbag to the vehicle. It is disclosed to prevent the spread.
However, in the curtain airbag device disclosed in Patent Document 1, the bag body can be prevented from spreading toward the cabin side only at the position where the hanger member 40 is provided, and the bag is provided at the position where the hanger member 40 is provided. It is not required to prevent the main body from spreading to the cabin side.

For example, as an example in which it is required to prevent the curtain airbag from spreading to the cabin side, when there is no restriction in the direction in which the curtain airbag is deployed, the headlining 9 that is the ceiling of the vehicle compartment and the vehicle shown in FIG. It will once expand | deploy in the space inside the vehicle width direction between the roof panels 7 which are no roof. For this reason, the force which pushes and breaks the head lining 7 is weakened, and in the worst case, there is a possibility of causing poor development from the head lining 7.
This phenomenon is most noticeable in vehicles equipped with sunroofs. In the case of a vehicle equipped with a sunroof, a sunroof unit 11, which is a mechanism for opening and closing the sunroof, is arranged between the headlining 9 and the roof panel 7. The head lining 9 is installed at a lower position, and the inclination of the end of the head lining 9 on the outer side in the vehicle width direction is gentle.

  Thus, since the curtain airbag 12 is structured to be easily deployed inward in the vehicle width direction, the curtain lining 9 and the sunroof unit 11 are coupled with the tape 25 or the like as shown in FIG. Efficiency at the time of deployment of bag 12 is raised. However, this method requires a lot of labor for construction, and increases the cost.

  Accordingly, the present invention provides a guide member that regulates the deployment of the curtain airbag in the vehicle width direction in order to increase deployment efficiency by regulating the deployment of the curtain airbag in the vehicle width direction. An object of the present invention is to propose a curtain airbag device provided with the above.

A curtain airbag device according to a first aspect of the present invention for solving the above problems includes an airbag that is deployed in an emergency such as a collision at an upper portion of a side surface of a vehicle compartment, an obliquely upper side of the airbag, and a vehicle width. sunroof equipped vehicle comprising an inflator for deploying the airbag is disposed inwardly, the air bag unit comprising the said connecting an air bag and the inflator produced by the inflator gas from the connecting unit is supplied to the air bag A sunroof unit is provided between the roof panel and the headlining of the vehicle, and a guide member for restricting deployment of the airbag in the vehicle width direction is connected between the airbag and the sunroof unit. parts provided separately from said air bag unit in the vicinity of the guide member is a vehicle than the connecting portion It characterized that you have been formed to protrude forward and backward.

The above problem curtain airbag device according to a second invention for solving the, in the curtain airbag according to the first inventions, the guide member, a roof rail in the vehicle width direction end of the roof It is provided in the upper end part of the pillar to connect.

The above problem curtain airbag device according to a third invention for solving the, in the curtain airbag according to the first invention or the second inventions, the guide member has one end fixed to said vehicle The other end is provided with a restricting portion for restricting the inward deployment of the airbag in the vehicle width direction, and the end portion on the other end side is subjected to a bending process.

A curtain airbag device according to a fourth aspect of the present invention for solving the above-described problems is a curtain airbag according to any one of the first to third aspects of the present invention. Is located on the opposite side of the restricting portion that restricts the airbag from expanding inward in the vehicle width direction with the airbag unit interposed therebetween.

A curtain airbag device according to a fifth aspect of the present invention for solving the above problems is the curtain airbag according to any one of the first to fourth aspects of the present invention, wherein the guide member is mounted on the airbag. It is provided to face a jump member that is deployed indoors.

According to the first aspect of the present invention, the upper part of the side surface of the compartment of the vehicle includes an airbag that is deployed downward in an emergency such as a collision, an inflator that deploys the airbag, and a connection part that connects the airbag and the inflator. In a vehicle equipped with a sunroof equipped with an airbag unit, a sunroof unit is provided between the roof panel and the headlining of the vehicle, and the airbag is deployed inward in the vehicle width direction between the airbag and the sunroof unit. Providing a regulating guide member in the vicinity of the connecting portion separately from the airbag unit makes it possible to efficiently deploy the curtain airbag and to easily install the guide member at a position suitable for the vehicle body structure. Can do.
Further, by providing the guide member between the airbag and the sunroof unit, the deployment efficiency can be increased with a simple structure.
Further, by providing the guide member in the vicinity of the connection portion between the inflator and the airbag, the ceiling can be pushed through using the greatest pressure applied at the initial stage of the airbag deployment. As a result, the curtain airbag can be efficiently deployed.

According to the second invention, by providing the guide member at the upper end portion of the pillar connected to the roof rail at the vehicle width direction side end of the roof, it is possible to accurately apply a force to a portion that requires the most force during deployment. it can. As a result, the curtain airbag can be efficiently deployed.

According to the third invention, the guide member has one end fixed to the vehicle, and the other end includes a restricting portion that restricts the airbag from expanding inward in the vehicle width direction. Since the bending process is performed, when the airbag is deployed, the deployment to the inner side in the vehicle width direction can be restricted without damaging the airbag at the end of the guide member.

According to the fourth invention, by the restricting portion mounting portion of the vehicle mounting the guide member to restrict the expansion of the vehicle width direction inner side of the air bag across the airbag unit on the opposite side, the guide member Is easy to install.

According to the fifth aspect of the invention, the curtain member can be efficiently deployed by providing the guide member so as to face the jump member that deploys the airbag toward the vehicle interior side.

  A curtain airbag device according to the present invention will be described with reference to FIGS. 1 is a cross-sectional view of the curtain airbag device according to the first embodiment in the vehicle width direction, FIG. 2 is a perspective view of the guide bracket according to the first embodiment, and FIG. 3 is a plan view of the guide bracket according to the first embodiment. 4 is a perspective view of the upper part of the center pillar to which the guide bracket according to the first embodiment is mounted, and FIG. 5 is a perspective view of the upper part of the center pillar according to the first embodiment. In the figure, Fr indicates the front of the vehicle, In indicates the inner side in the vehicle width direction, and Up indicates the upper side of the vehicle.

  Hereinafter, the vehicle body structure according to the present embodiment will be described. As shown in FIG. 1, there is a center pillar 2 (pillar) at the center in the vehicle front-rear direction. The center pillar 2 includes a center pillar inner 3, a center pillar lean reinforcement 4, and a center pillar outer 5. At the upper end portion of the center pillar 2, there is a side roof rail inner 6 that extends in the vehicle longitudinal direction.

  On the upper end portion of the side roof rail inner 6, the end portion on the outer side in the vehicle width direction of the roof panel 7 (roof), the upper end portion of the center pillar outer 5, and the upper end portion of the center pillar lean reinforcement 4 are overlapped. These are connected by welding or the like. A side roof rail outer 8 is disposed between the side roof rail inner 6 and the center pillar lean reinforcement 4, and the side roof rail outer 8 is coupled to the vehicle interior side of the center pillar lean reinforcement 4 by welding or the like. .

  A center pillar inner 3 is arranged on the vehicle interior side of the center pillar lean reinforcement 4 below the side roof rail inner 6, and is coupled to the vehicle interior side of the center pillar lean reinforcement 4 by welding or the like. With such a structure, the center pillar inner 3 at the upper part of the center pillar 2 has high rigidity.

  The head lining 9 that forms a ceiling in the vehicle interior is in contact with the upper end portion 10a of the center pillar lining 10 at the end portion on the outer side in the vehicle width direction. Thus, the head lining 9 is supported by the center pillar lining upper end portion 10a and the like.

  The vehicle to which this embodiment is applied is a sunroof equipped vehicle equipped with a sunroof. For this reason, an opening 15 (FIGS. 4 and 5) is provided at the center of the roof panel 7. A sunroof unit 11 having a roof lid (not shown) formed of glass, steel plate or the like that fits into the opening 15 on the upper surface is installed below the opening 15. The sunroof equipped vehicle can open and close the roof lid that closes the opening 15 by the sunroof unit 11.

  The sunroof unit 11 is installed between the roof panel 7 and the headlining 9 and is coupled to the lower surface of the roof panel 7 by welding or the like. For this reason, the distance between the roof panel 7 and the headlining 9 is increased by the thickness of the sunroof unit 11 in comparison with the standard roof vehicle, and the headlining 9 in the vehicle width direction is larger than that of the standard roof vehicle. The slope of the end is gentle.

  Hereinafter, the guide bracket 1 (guide member) according to the present embodiment will be described. The guide bracket 1 is manufactured by pressing a steel plate. As shown in FIG. 1, the guide bracket 1 has a substantially U-shaped cross section. In addition, the end of the guide bracket 1 on the inner side in the vehicle width direction is bent to form a rounded portion 20. This is to prevent the end portion of the guide bracket 1 from damaging the curtain airbag 12 when the curtain airbag 12 (airbag) is deployed.

  As shown in FIGS. 2 and 3, the outer surface of the guide bracket 1 in the vehicle width direction is fastened by two bolts 21 to be coupled to the vehicle interior side of the side roof rail inner 6 on the center pillar 2. The The shape around the part through which the bolt 21 penetrates is a convex portion 22. This is because the side roof rail inner 6 and the guide bracket 1 are securely joined, and this part is formed into a convex three-dimensional structure, thereby increasing the rigidity of the attachment part of the guide bracket 1.

  An opening 23 through which a bolt 18 for attaching the mounting bracket 17 of the curtain airbag 12 can be passed is provided between the two convex portions 22. Further, the guide bracket 1 is provided with a relief portion 24 so as not to interfere when the curtain airbag 12 is attached. In this embodiment, the guide bracket 1 is shaped as described above, but the shape of the guide bracket 1 can be changed as appropriate according to the vehicle body structure to be installed.

  As shown in FIG. 4, the guide bracket 1 is installed on the vehicle interior side of the side roof rail inner 6 above the center pillar 2. The convex portion 22 of the guide bracket 1 is joined to the vehicle interior side of the side roof rail inner 6, and these are joined by bolting with a bolt 21 attached to the guide bracket 1.

  In addition, as shown in FIG. 1, a jump bracket 14 (jump member) for allowing the curtain airbag 12 to be efficiently opened to the vehicle interior side is provided at a coupling portion between the guide bracket 1 and the center pillar inner 3. The guide bracket 1 and the center pillar inner 3 can be sandwiched between the guide bracket 1 and the center pillar inner 3, and can be joined together by bolts 21. As a result, the guide bracket 1 and the jump bracket 14 face each other.

  The airbag unit 19 includes a curtain airbag 12 and an inflator 13 that is a gas generator for deploying the curtain airbag 12. The curtain airbag 12 and the inflator 13 are connected by a diffuser 16 for supplying the generated gas. In the present embodiment, the curtain airbag 12 is rolled and folded into a roll shape, but a Z-folded one folded in a Z shape may be used.

  As shown in FIG. 5, the airbag unit 19 is installed on the vehicle interior side of the side roof rail inner 6 above the center pillar 2. Thus, the position of the attachment portion of the guide bracket 1 is on the outer side (opposite side) in the vehicle width direction with the airbag unit 19 in between when viewed from the vehicle interior.

  In this embodiment, the guide bracket 1 is installed on the center pillar 2 as an example. However, it can be installed on the front pillar and the rear pillar. In the present embodiment, a vehicle body structure equipped with a sunroof is taken as an example, but the guide bracket 1 can be installed on a standard roof vehicle. In this case, the deployment performance of the curtain airbag 12 can be ensured by the guide bracket 1 without depending on the shape of the headlining 9.

  According to the curtain airbag 12 according to the present embodiment, by providing the guide bracket 1 that restricts the deployment of the curtain airbag 12 in the vehicle width direction between the curtain airbag 12 and the roof panel 7 of the vehicle, The curtain air bag 12 can be efficiently deployed.

  Further, by providing the guide bracket 1 separately from the airbag unit 19, the guide bracket 1 can be installed at an appropriate position depending on the shape of the vehicle and the type of the airbag unit 19.

  Further, the guide bracket 1 is provided in the vicinity of the diffuser 16 that is a connecting portion that connects the curtain airbag 12 and the inflator 13, thereby using the largest pressure applied at the initial stage of the deployment of the curtain airbag 12. The lining 9 can be pushed through. As a result, the curtain airbag 12 can be efficiently deployed. Furthermore, when the guide bracket 1 is disposed in the vicinity of the diffuser 16, the guide bracket 1 integrated with the jump bracket 14 may be used.

  Further, the guide bracket 1 is provided at the upper end portion of the center pillar 2, so that it is possible to accurately apply a force to the head lining 9 on the upper portion of the center pillar lining 10 that requires the most force during deployment. In recent years, in consideration of the harmfulness of an airbag, the pressure during deployment tends to be set lower than before, but the curtain airbag 12 can be efficiently deployed by the above structure.

  Further, since the guide bracket 1 is provided with the rounded portion 20, when the curtain airbag 12 is deployed, the guide bracket 1 is deployed inward in the vehicle width direction without damaging the curtain airbag 12 at the end of the guide bracket 1. Can be regulated.

  Further, the guide bracket 1 can be easily mounted because the mounting portion of the guide bracket 1 is on the opposite side of the airbag unit 19.

  Moreover, the guide bracket 1 can be efficiently deployed by providing the guide bracket 1 so as to face the jump bracket 14 that deploys the curtain airbag 12 toward the vehicle interior side.

It is sectional drawing in the vehicle width direction of the curtain airbag apparatus which concerns on Example 1. FIG. It is a perspective view of the guide bracket which concerns on Example 1. FIG. It is a top view of the guide bracket which concerns on Example 1. FIG. It is a perspective view of the center pillar upper part equipped with the guide bracket which concerns on Example 1. FIG. FIG. 3 is a perspective view of an upper part of the center pillar according to the first embodiment. It is sectional drawing in the vehicle width direction of the conventional curtain airbag apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide bracket 2 Center pillar 6 Side roof rail inner 7 Roof panel 9 Headlining 10 Center pillar lining 11 Sunroof unit 12 Curtain airbag 13 Inflator 14 Jump bracket 16 Diffuser 19 Airbag unit 20 Rounding part

Claims (5)

An airbag that is deployed in the event of an emergency such as a collision, an inflator that is disposed obliquely above the airbag and on the inner side in the vehicle width direction, and that deploys the airbag, and the airbag and the inflator. in sunroof equipped vehicle including an air bag unit formed by connecting the generated gas by the inflator bets from the connecting portion to supply to the airbag,
A sunroof unit is provided between the roof panel and the headlining of the vehicle,
A guide member that regulates deployment of the airbag inward in the vehicle width direction is provided separately from the airbag unit between the airbag and the sunroof unit, and the guide member is curtain air bag device characterized that you have been formed to protrude on the front and rear of the vehicle than the connecting portion. In the curtain airbag device according to claim 1,
The curtain airbag device according to claim 1, wherein the guide member is provided at an upper end portion of a pillar connected to a roof rail at a vehicle width direction side end of the roof. In the curtain airbag device according to claim 1 or 2,
One end of the guide member is fixed to the vehicle, the other end includes a restricting portion that restricts the airbag from being deployed inward in the vehicle width direction, and the end portion on the other end side is subjected to a bending process. A curtain airbag device characterized by comprising: In the curtain airbag device according to any one of claims 1 to 3,
The curtain airbag device according to claim 1, wherein a vehicle-side attachment portion to which the guide member is attached is on a side opposite to a restriction portion that restricts the airbag from being deployed inward in the vehicle width direction with the airbag unit interposed therebetween. In the curtain airbag device according to any one of claims 1 to 4,
The curtain airbag device according to claim 1, wherein the guide member is provided to face a jump member that deploys the airbag toward a vehicle interior side.

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