JP2014189180A - Curtain airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a strap from hanging down when the strap is connected to a front pillar.SOLUTION: A curtain airbag device comprises an airbag 4 arranged on the opposite cabin side of a roof head lining for covering a roof side rail 6 of a vehicle and deployed in a cabin along a side door by gas generated by an inflator 5 in an emergency and the strap 1 arranged inside a garnish for covering a front pillar 3 of the vehicle and fastening a front part of the airbag 4 and the front pillar 3. While a length adjusting part 1a is formed in the strap 1, a shoulder part 7a for supporting the length adjusting part 1a of the strap 1 is formed in a bracket 7 for installing the curtain airbag device in the vehicle. The shoulder part 7a and the length adjusting part 1a of the strap 1 are fastened by a tape 8 easily slipped out when the airbag 4 is deployed. The front pillar and the strap can be easily covered with the garnish.

Description

  The present invention relates to a curtain airbag device that protects an occupant's head by deploying an airbag in a vehicle compartment along a side door, for example, in the event of a collision from the side of a vehicle.

  The curtain airbag device deploys an airbag along a side door vertically downward in a curtain shape along a side door by a gas generated by an inflator when a high load is applied from the side of the vehicle body.

  The curtain-like airbag is attached to a roof side rail of an automobile, for example, in a state of being folded into a roll, and is covered with a roof head lining and stored on the side opposite to the passenger compartment.

  At the time of deployment, the roof head lining is pushed to the vehicle interior side by the airbag to be deployed, the front end and the pillar trim are disengaged, and the airbag is opened from the opening formed by the front end side being pushed and expanded to the vehicle interior side. It is deployed in curtains in the passenger compartment.

  By the way, the vehicle may roll over due to a collision from the side of the vehicle. During such a rollover, there is a risk that the occupant breaks the side door glass and is thrown out of the vehicle.

  Therefore, a strap is attached to the end portion of the airbag (hereinafter referred to as the front end portion) located on the front side in the vehicle traveling direction, and the end portion on the opposite side of the airbag (hereinafter referred to as the front end portion) is connected to the front pillar of the vehicle. (Patent Document 1). By doing so, sufficient tension is applied to the deployed airbag, and the passenger is not thrown out of the vehicle while supporting the occupant even when the vehicle rolls over.

  By the way, the strap and the front pillar are connected via a bracket 2 attached to the tip of the strap 1 as shown in FIG.

  In the case of the connection structure via the bracket 2 as shown in FIG. 3, if the length of the strap 1 is too short, the strap 1 and the front pillar 3 cannot be connected, so the length of the strap 1 is longer than the required length. doing. Therefore, after the strap 1 and the front pillar 3 are connected, the intermediate portion of the strap 1 hangs down as shown in FIG. In addition, 4 in FIG. 3 shows the airbag folded in roll shape.

  When the airbag device is attached to the vehicle, if the intermediate portion of the strap hangs down as described above, the front pillar may be caught when covered with a garnish (vehicle interior material).

  If the hanging strap is bitten in the garnish, the strap will be caught when the airbag is deployed and normal deployment will not be possible. I had to.

  The complexity of the garnish installation work is particularly noticeable in the case of a narrow front pillar that has been adopted in recent years in order to further improve the front view of the occupant.

JP 2012-20719 A

  The problem to be solved by the present invention is that in the case of the conventional connecting structure of the strap and the front pillar, the operation of storing the hanging strap in the garnish is complicated.

  An object of the present invention is to make it possible to easily cover a strap with a garnish so that the strap does not hang down when the strap is connected to a front pillar. .

That is, the curtain airbag device of the present invention is
An airbag that is disposed on the side opposite to the passenger compartment side of the roof head lining that covers the roof side rail of the vehicle, and is deployed in a curtain shape along the side door by a gas generated by an inflator in an emergency;
A strap that is disposed inside a garnish that covers the front pillar of the vehicle and that fastens the front portion of the airbag and the front pillar;
A curtain airbag device comprising:
While the strap is folded back to form the length adjustment portion,
A bracket for attaching the curtain airbag device to the vehicle is formed with a shoulder portion for supporting the length adjustment portion of the strap, and the shoulder portion and the length adjustment portion of the strap are easily detached when the airbag is deployed. The main feature is that it is fastened with a locking means.
In the present application, “front” indicates the “front” direction in the front-rear direction of the vehicle.

  In the present invention, a shoulder portion for supporting a length adjusting portion formed by folding a strap is formed on a bracket, and the shoulder portion and the length adjusting portion are easily disengaged when an airbag is deployed. Fastened with tape, the strap is simply shortened when shipped from the factory. Therefore, the strap does not hang down when attached to the vehicle. If an adhesive is applied to one side of the tape, it can be fixed at the same time as the tape is piled up when it is fastened.

  According to the present invention, a shoulder portion for supporting a length adjusting portion formed on a strap is formed on a bracket, and the shoulder portion and the length adjusting portion are fastened by a locking means that is easily detached when an airbag is deployed. The strap does not hang down when attached to the camera. Therefore, the strap can be easily covered with the garnish.

BRIEF DESCRIPTION OF THE DRAWINGS It is the figure which showed 1st Example of the curtain airbag apparatus of this invention, (a) is the figure which showed the front-end part of the state which expand | deployed the airbag from the attachment side to a vehicle, (b) is the advancing direction of a vehicle The enlarged view of the said part in the state which attached the bracket to the frontmost tab, (c) is the figure which showed the front end side of the state which folded the airbag in roll shape from the attachment side to a vehicle, (d) is a vehicle interior It is a figure of the state attached to. FIG. 2 is a diagram illustrating a curtain airbag device according to a second embodiment of the present invention, in which (a) is an enlarged view showing a front end portion of a strap from a side attached to a vehicle, and (b) is an airbag folded in a roll shape. The figure which showed the front end side of the state from the attachment side to a vehicle, (c) is a figure of the state attached to the vehicle interior. It is a figure explaining the fastening structure to the front pillar of the strap at the time of storing the curtain airbag device in the vehicle.

  In the present invention, when the strap is connected to the front pillar, a shoulder for supporting the length adjusting portion formed by folding the strap is formed on the bracket for the purpose of preventing the strap from hanging down. This is achieved by fastening the length adjusting portion with a locking means.

Hereinafter, an embodiment of the curtain airbag device of the present invention will be described with reference to FIGS.
FIG. 1 is a view showing a first embodiment of the curtain airbag device of the present invention, and FIG. 2 is a view showing a similar second embodiment.

  As shown in FIG. 1 (a), the present invention deploys a curtain 4 to protect the head of a seated occupant by high-pressure gas ejected from an inflator 5, and the vehicle travel of the airbag 4 It is the structure provided with the strap 1 which latches the front part of a direction to the front pillar 3. FIG.

  As shown in FIGS. 1C and 2B, the airbag 4 is folded into a roll shape in a substantially vertical direction and is attached to the roof side rail 6 of the vehicle compartment together with the inflator 5. Mounted. The attachment to the roof side rail 6 is performed via a bracket 7 attached to the tab 4a of the airbag 4.

  When a high load of a predetermined value or more is applied to the side of the vehicle body due to a collision from the side of the vehicle, etc., a high pressure gas is ejected from the inflator 5 in response to a signal from the sensor and supplied to the chamber through the duct. Thus, the airbag 4 is deployed in a curtain shape.

  In the present invention, the strap 1 for applying sufficient tension to the deployed airbag 4 to stably restrain an occupant even when the vehicle rolls over does not hang down when attached to the vehicle. It is a thing.

  That is, in the present invention, the strap 1 is folded back to form the length adjusting portion 1a, while the bracket 7 for attaching the curtain airbag device to the vehicle has a shoulder portion that supports the length adjusting portion 1a of the strap 1. 7a is formed.

  Then, the length adjusting portion 1a of the strap 1 is attached to the shoulder portion 7a of the bracket 7 with, for example, a paper band-like tape 8, so that the strap 1 is adjusted to a length that does not hang down when attached to the vehicle. At this time, an adhesive is applied to the back surface of the tape 8 in advance, and these are fixed at the same time as being wound around the length adjusting portion 1a and the shoulder portion 7a.

  In the first embodiment shown in FIG. 1, the bracket 7 having the shoulder 7a is attached to the frontmost tab 4aa in the vehicle traveling direction out of the tabs 4a attached to the airbag 4, while the strap 1 The length adjusting portion 1 a is formed in the vicinity of the connecting portion with the airbag 4.

  In the second embodiment shown in FIG. 2, the bracket 7 having the shoulder 7 a is attached to the tip of the strap 1, while the length adjusting portion 1 a of the strap 1 is formed at the tip of the strap 1. Is.

  The bracket 7 is attached to the tabs 4 a and 4 aa of the airbag 4 by, for example, sewing both ends of the tab 4 aa through the hole 7 b provided in the bracket 7 to the airbag 4. The bracket 7 is attached to the tip of the strap 1 by, for example, positioning the tip of the strap 1 in a hole 7b provided in the bracket 7 and sewing the two together.

  A procedure for mounting the curtain airbag device of the present invention to the vehicle will be described below with reference to the first and second embodiments shown in FIGS.

(First embodiment: see FIG. 1)
First, among the tabs 4a attached to the airbag 4, the bracket 7 having the shoulder portion 7a is attached to the tab 4aa located at the foremost position in the vehicle traveling direction when attached to the vehicle (FIG. 1B). Note that ordinary brackets 7 and 2 are attached to the other tabs 4 a and the tips of the straps 1.

  Next, the airbag 4 is folded into a roll shape in a substantially vertical direction to be long. In this state, in the vicinity of the connection portion with the airbag 4, the strap 1 is folded back to form a length adjusting portion 1 a for adjusting the length of the strap 1 to an optimum length, and the formed length adjusting portion 1 a The band-like tape 8 is collectively fastened to the shoulder 7a of the bracket 7 attached to the tab 4aa (FIG. 1 (c)).

  The length adjusting unit 1a prepares a roll-shaped airbag 4 and a pattern on which the correct length of the strap 1 is drawn, and combines the roll-shaped airbag 4 on the pattern. The strap 1 is formed by folding back the extra length. In addition, a paper pattern on which the correct length of the strap 1 attached to the airbag 4 is drawn is prepared, and the state in which the strap 1 is attached to the air bag 4 by sewing or the like is aligned on the paper pattern, An extra length may be folded back. Adhesive is applied in advance to the back surface of the tape 8 and is wound around the length adjusting portion 1a and the shoulder portion 7a and fixed at the same time.

  Thereafter, the airbag 4 is attached to the roof side rail 6 of the passenger compartment together with the inflator 5, while the tip of the strap 1 adjusted to the optimum length is engaged with the front pillar 3 (FIG. 1 (d)).

(Second embodiment: see FIG. 2)
A bracket 7 having a shoulder 7 a is attached to the tip of the strap 1. At this stage, a paper pattern on which the correct length of the strap 1 attached to the airbag 4 is drawn is prepared, and on the paper pattern, the excess tip portion of the strap 1 is folded back to adjust the length adjusting unit 1a. The length adjusting portion 1a is collectively fastened to the shoulder portion 7a of the bracket 7 with a strip-shaped tape 8 (FIG. 2 (a)).

  Next, the airbag 4 is folded up in a substantially vertical direction (FIG. 2B), and in this state, the airbag 4 is attached to the roof side rail 6 of the passenger compartment together with the inflator 5 and the bracket attached to the tip of the strap 1 7 is engaged with the front pillar 3 (FIG. 2C). By the way, the length adjusting unit 1a prepares a roll-shaped airbag and a pattern on which the correct length of the strap is drawn, and combines the roll-shaped airbag on the pattern, You may fold and form the extra length of a strap.

  In the curtain airbag device of the present invention, the strap 1 does not hang down when attached to the vehicle without changing the configuration on the vehicle side, so that it is easily covered with garnish without biting the strap 1. be able to.

  The present invention is not limited to the above examples, and it goes without saying that the embodiments may be appropriately changed as long as they are included in the scope of the technical idea described in each claim.

  That is, the embodiments described with reference to FIGS. 1 and 2 are preferable examples of the present invention, and other embodiments can be implemented or performed by various methods. In particular, the present invention is not limited to the detailed shape, size, configuration, and the like of the components shown in the accompanying drawings unless otherwise specified in the present specification. In addition, expressions and terms used in the present specification are for the purpose of explanation, and are not limited thereto unless specifically limited.

  For example, in the above-described embodiment, the case where the paper tape 8 is used as the locking means is described. However, the length adjustment portion 1a is relatively flexible and thin so that the length adjustment portion 1a can be attached to the shoulder portion 7a, and the attachment is easily released when the airbag 4 is deployed. If it has, it may be a tape-shaped surface fastener.

  Further, the bracket 7 and the tab 4a of the airbag 4 and the strap 1 may be attached not only by sewing but also by caulking or the like as long as the connection between the bracket 7 and the strap 1 is not separated even when the airbag 4 is deployed.

  The curtain airbag device of the present invention can be installed not only in an automobile but also in a side window portion of an aircraft, a ship, etc., and the same effect is exhibited.

DESCRIPTION OF SYMBOLS 1 Strap 1a Length adjustment part 3 Front pillar 4 Air bag 4aa Frontmost tab 5 Inflator 6 Roof side rail 7 Bracket 7a Shoulder part 8 Tape

Claims (4)

An airbag that is disposed on the side opposite to the passenger compartment side of the roof head lining that covers the roof side rail of the vehicle, and is deployed in a curtain shape along the side door by a gas generated by an inflator in an emergency;
A strap that is disposed inside a garnish that covers the front pillar of the vehicle and that fastens the front portion of the airbag and the front pillar;
A curtain airbag device comprising:
While the strap is folded back to form the length adjustment portion,
A bracket for attaching the curtain airbag device to the vehicle is formed with a shoulder portion for supporting the length adjustment portion of the strap, and the shoulder portion and the length adjustment portion of the strap are easily detached when the airbag is deployed. A curtain airbag device characterized in that it is fastened by a locking means.   2. The curtain airbag device according to claim 1, wherein the bracket is attached to a frontmost tab in a traveling direction of the vehicle among the tabs attached to the airbag in order to attach the airbag to the vehicle.   The curtain airbag device according to claim 1, wherein the bracket is attached to a tip of the strap.   The curtain airbag according to any one of claims 1 to 3, wherein the locking means is a belt-like tape that holds the length adjusting portion and the shoulder portion together.

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