JP2016175590A - Curtain airbag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a connection part from being deformed during bending.SOLUTION: A curtain airbag device 11 includes an air bag 5 fitted from a front pillar FP along a roof side rail RSR and developed in a curtain shape in a cabin along a side window by gas generated at an inflator 4. A plurality of resin covers 12 is disposed between the device and a vehicle along the longitudinal direction of the folded air bag 5. In a connection part 13 for connecting adjacent resin covers, a strap 13a having a slot 13aa extending in the longitudinal direction of the air bag 5 is provided on one resin cover 12, and a projected part 13b having a head part 13ba engaged with the slot 13aa and movable along the longitudinal direction of the slot 13aa is provided in the other resin cover 12.EFFECT: The air bag can be prevented from being twisted during its fitting to the vehicle, and desired development performance can be provided while maintaining a desired form during the fitting to the vehicle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a curtain airbag device that protects an occupant's head with an airbag deployed in a curtain shape along a side window, for example, when an automobile is collided from the side.

  Hereinafter, in the present application, “upper” and “upper” mean the ceiling side of the automobile, and “lower” and “lower” mean the floor side of the automobile. Further, “front” and “front” mean the forward direction side of the automobile, and “rear” and “rear” mean the backward direction side of the automobile.

  The curtain airbag device, for example, generates gas by operating an inflator when a high load such as a collision is applied to the side of the automobile, and in the vehicle interior, the airbag is placed in a curtain shape vertically along the side window. It is something to be developed.

  The curtain airbag device 1 is attached to the roof side rail RSR from the front pillar FP of the automobile using a clip 2 or a bracket 3 as shown in FIG. 4, for example, and is covered with a front pillar garnish or a room head lining. Stored outside.

  For example, when the automobile is collided from the side, the airbag 5 is deployed by the gas generated by the inflator 4, and the front pillar garnish and the room head lining are pushed to the vehicle interior side to cause the front pillar FP and the roof side rail RSR. Is disengaged.

  After the disengagement, the airbag is deployed in a curtain shape in the vehicle interior from the opening formed by the front pillar garnish and the room head lining disengaged from the front end side of the vehicle interior.

  By the way, as shown in FIG. 5, the curtain airbag device is divided into a plurality of resins divided in the longitudinal direction of the airbag in order to improve the convenience of handling such as protection and transportation of the airbag before and after being attached to the vehicle. It is configured to cover with the cover 6 and bend between the resin covers 6. At that time, as in the invention described in Patent Document 1, there is one in which adjacent resin covers are connected to each other by a coupling portion.

  As shown in FIG. 5, when the product conveyed in a state of being bent between the resin covers 6 is linearly extended as shown in FIG. 6 and attached to the vehicle, it is twisted when bent as shown in FIG. If the thing is attached as it is, the airbag 5 may not be able to perform the intended deployment. In the case of the invention described in Patent Document 1, since a plurality of resin covers are coupled when attached to a vehicle, when the airbag is coupled in a twisted state, the twisted state is fixed.

  In view of this, a configuration has been proposed in which the airbag is covered with a plurality of resin covers and bent at the joint portion of the resin covers so that the airbag can be prevented from being attached in a twisted state when mounted on a vehicle. (For example, Patent Documents 2 and 3).

  However, in the inventions described in Patent Documents 2 and 3, since the coupling portion is greatly deformed when being folded at the coupling portion for transportation or the like, stress is generated in the resin cover, and it is expected to be attached to the vehicle. This form cannot be maintained, and the expected deployment performance may not be obtained.

JP 2009-241895 A JP 2008-184056 A JP 2011-31640 A

  The problem to be solved by the present invention is that when the airbag is covered with a plurality of resin covers, when the long airbag is prevented from being attached to the vehicle in a twisted state, it is bent at the coupling portion. In this case, the joint part is greatly deformed and stress is generated in the joint part of the resin cover, so that the desired form cannot be maintained when it is attached to the vehicle, and the desired deployment performance may not be obtained. .

  The present invention is configured to be bent at a connecting portion that connects a plurality of resin covers that cover the airbag, and can be prevented from being attached in a twisted state when mounted on a vehicle, and is bent at the connecting portion. The purpose is to prevent the connecting portion from being deformed even at the time of.

The present invention
Curtain airbag equipped with an airbag that is mounted in the longitudinal direction of the vehicle along the roof side rail from the front pillar of the vehicle, and that deploys in a curtain shape along the side window by the gas generated by the inflator in an emergency. A device,
A plurality of resin covers disposed between the folded airbag and the vehicle along the longitudinal direction;
Of the plurality of resin covers, a connecting portion for connecting adjacent resin covers is provided with one resin cover provided with a strap having a slot extending in the longitudinal direction of the airbag, while the other resin cover is provided with the slot. The most important feature is that a protrusion having a head part that is engaged with the slot and is movable along the longitudinal direction of the slot is provided.

  The present invention provides a connecting portion for connecting a plurality of resin covers arranged between a vehicle along a longitudinal direction of an airbag, a strap having a slot formed in one resin cover, and the other resin cover. Is provided with a protrusion having a head portion engaged with the slot.

  The slot is extended in the longitudinal direction of the airbag, while the head portion is engaged so as to be movable along the longitudinal direction of the slot.

  In the present invention having such a configuration, the head portion moves in the longitudinal direction in the slot when the resin cover is bent at the connecting portion for connecting the resin covers and extended for attachment to the vehicle.

  At this time, one end in the longitudinal direction of the slot is set to a position where the head portion is furthest away from the adjacent resin cover when the airbag is bent at the coupling portion, while the other end is the head when the airbag is attached to the vehicle. The part is the position closest to the adjacent resin cover. In this way, when the airbag is bent at the joint, the joint does not deform and stress does not occur in the resin cover. Further, the airbag can be prevented from being twisted and attached to the vehicle.

  Further, when the airbag is attached to the vehicle, the length of the head portion of the protrusion portion in the direction perpendicular to the longitudinal direction of the slot opened in the strap is made longer than the width of the slot, while the protrusion portion including the head portion When the length of the slot in the longitudinal direction is shorter than the width of the slot, the adjacent resin covers can be easily connected.

  In the present invention, the airbag can be prevented from being twisted and attached to the vehicle, and when the airbag is bent at the coupling portion, the coupling portion is not deformed and stress is not generated in the resin cover. When it is attached to the vehicle, the desired form can be maintained and the desired deployment performance can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the principal part of the curtain airbag apparatus of this invention, (a) is the figure which showed the state at the time of attachment to a vehicle, (b) is an enlarged view of the coupling | bond part of the resin cover of (a), (c) is the figure which showed the state which bent the coupling | bond part of the resin cover. FIG. 4 is an enlarged explanatory view of another example of the joint portion of the resin cover in the curtain airbag device of the present invention, where (a) is a view from above, (b) is a view from the side, and (c) is (b ) AA sectional view of the figure, (d) is a perspective view. (A)-(c) is a figure explaining later the attachment state of the coupling | bond part of the resin cover in the curtain airbag apparatus of this invention later on. (A) is the figure which looked at the attachment state to the vehicle of a curtain airbag apparatus from the side of a vehicle, (b) (d) is the figure which showed the attachment part to a vehicle, (c) (e) is (b) ) (D) is a view from the vehicle side. (A) is the figure which showed the state which bent the airbag covered with the some resin cover between resin covers, (b) is an enlarged view of the bending part between resin covers. It is a figure explaining the state which extends what was conveyed in the state bent between resin covers, and was attached to a vehicle linearly. It is the figure which showed the bending part of the airbag of the twisted state.

  An object of the present invention is to prevent deformation of a joint portion when the airbag is bent at the joint portion while preventing the airbag from being twisted and attached.

  For this purpose, one adjacent resin cover is provided with a strap having a slot extending in the longitudinal direction of the airbag, while the other resin cover is engaged with the slot and moved along the longitudinal direction of the slot. This is realized by providing a projecting portion having a head portion that is freely movable.

  Hereinafter, the curtain airbag device of the present invention will be described with reference to FIGS.

  Reference numeral 11 denotes a curtain airbag device that is attached from the front pillar FP of the vehicle along the roof side rail RSR, and includes a airbag 5 and an inflator 4.

  The airbag 5 of the curtain airbag device 11 is attached to the vehicle in a folded state. At this time, a plurality of resin covers are arranged so that the resin cover 12 is positioned between the airbag 5 and the vehicle along the longitudinal direction of the airbag 5. 12 is attached to the airbag 5.

  The plurality of resin covers 12 connect the adjacent resin covers 12 to each other by a coupling portion 13. In the present invention, the adjacent resin cover 12 is a strap having a slot 13aa extending in the longitudinal direction of the airbag 5. 13a is provided. On the other hand, the other resin cover 12 is provided with a protruding portion 13b having a head portion 13ba that engages with the slot 13aa and is movable along the longitudinal direction of the slot 13aa.

  In the present invention having the above-described configuration, since the coupling portion 13 has a slide structure, the distance between the adjacent resin covers 12 can be finely adjusted when the coupling portion 13 is attached to the vehicle. Further, since the resin covers 12 are not stretched after being attached to the vehicle, excessive stress is not applied to the resin cover 12. Furthermore, since the structure of the coupling | bond part 13 is simple, the metal mold | die of the resin cover 12 and the coupling | bond part 13 becomes simple, and becomes easy to produce.

  The head portion 13ba of the protruding portion 13b is preferably a plate shape as shown in FIG. 2 instead of the truncated cone shape shown in FIG. In a state where the roll or folded airbag 5 is extended in the longitudinal direction, the length L1 of the head portion 13ba in the direction orthogonal to the longitudinal direction of the slot 13aa opened in the strap 13a is longer than the width W of the slot 13aa. To do. Further, the length L2 of the protrusion 13b including the head portion 13ba in the longitudinal direction of the slot 13aa is shorter than the width W of the slot 13aa.

  When the head portion 13ba of the protruding portion 13b is plate-shaped and the lengths L1 and L2 are as described above, when the adjacent resin covers 12 are connected, they are connected in the order shown in FIGS. 3 (a) to 3 (c). That's fine.

  For example, as shown in FIG. 3A, the resin cover 12 on which the strap 13a is formed is positioned at an angle of approximately 90 ° with respect to the resin cover 12 on which the protruding portion 13b is formed, and the head portion 13ba is placed in the slot 13aa. Insert it.

  Next, the resin cover 12 on which the strap 13a is formed is rotated as shown in FIG. 3B, and the adjacent resin covers 12 are arranged in series as shown in FIG. 3C.

  That is, in the present invention, when the adjacent resin covers 12 are connected, the connecting portion 13 is not deformed, so that no excessive stress is applied to the connecting portion 13 and the resin cover 12.

  Meanwhile, the longitudinal position of the slot 13aa opened in the strap 13a is preferably as follows.

  That is, one end in the longitudinal direction of the slot 13aa is positioned so that the head portion 13ba is farthest from the adjacent resin cover 12 when the airbag 5 is folded at the coupling portion 13. The other end in the longitudinal direction of the slot 13aa is positioned so that the head portion 13ba is closest to the adjacent resin cover 12 when the airbag 5 is attached to the vehicle.

  When the position of the slot 13aa in the longitudinal direction is determined in this way, stress is generated in the resin cover 12 or the coupling portion 13 when the airbag 5 is folded at the coupling portion 13 during packing, such as during transportation. There is no.

  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 to 3 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, the strap 13a may be a simple plate as shown in FIG. 1 or a plate having a corrugated portion at the center as shown in FIGS.

  In addition, the embodiment described in FIG. 1 satisfies the requirements defined in claims 1 and 2 of the present application, and the embodiments described in FIGS. 2 and 3 satisfy all the requirements defined in claims 1-3 of the present application. However, only the requirements defined in claims 1 and 3 or only the requirements defined in claim 1 may be satisfied.

  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.

FP Front pillar RSR Roof head lining 4 Inflator 5 Air bag 11 Curtain airbag device 12 Resin cover 13 Coupling part 13a Strap 13aa Slot 13b Protruding part 13ba Head part

Claims (3)

Curtain airbag equipped with an airbag that is mounted in the longitudinal direction of the vehicle along the roof side rail from the front pillar of the vehicle, and that deploys in a curtain shape along the side window by the gas generated by the inflator in an emergency. A device,
A plurality of resin covers disposed between the folded airbag and the vehicle along the longitudinal direction;
Of the plurality of resin covers, a connecting portion for connecting adjacent resin covers is provided with one resin cover provided with a strap having a slot extending in the longitudinal direction of the airbag, while the other resin cover is provided with the slot. A curtain airbag device comprising a protrusion having a head portion that engages with the slot and is movable along the longitudinal direction of the slot.   One end in the longitudinal direction of the slot opened in the strap is a position where the head portion is furthest away from an adjacent resin cover when the airbag is bent at the coupling portion, and the other end in the longitudinal direction of the slot is 2. The curtain airbag device according to claim 1, wherein the head portion is a position closest to an adjacent resin cover when the airbag is attached to a vehicle.   When the airbag is attached to the vehicle, the head portion of the protruding portion has a length in a direction orthogonal to the longitudinal direction of the slot longer than the width of the slot, while the longitudinal direction of the slot of the protruding portion The curtain airbag device according to claim 1, wherein the length of the curtain airbag device is shorter than the width of the slot.

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