JP5044305B2 - Airbag device - Google Patents

Description

  The present invention relates to an airbag device that deploys and protects an occupant when a vehicle collides, and more particularly to a curtain airbag device that is installed along the upper edge of an opening of a vehicle body.

  This type of curtain airbag device is generally mounted with the bag folded along the opening of the vehicle body, for example, the upper edge of the side window of the vehicle, and the bag is inflated and deployed in a curtain shape at the time of a vehicle side collision. It is intended to protect the head of the passenger.

  For this purpose, the folded bag is usually housed in a flexible cylindrical sack, and the protector is covered along the longitudinal direction of the bag so as not to be interfered by the welded part of the vehicle body. For example, a plurality of the brackets are arranged, and brackets for installing each protector on the vehicle body are attached.

In the curtain airbag device configured as described above, the configurations of the conventional protector and bracket shown in FIGS. 9 and 10 are known (see Patent Document 1).
Japanese Patent Application No. 2006-69248.

  According to the prior art shown in FIG. 9 and FIG. 10, the long protector a having a substantially L-shaped cross section has a bag unit b configured by storing a folded bag in a cylindrical sack. It is attached by winding the illustrated adhesive tape.

  Further, for example, two sets of insertion piece portions g each having a pair of leg portions e and f facing each other on one side surface of the protector a are erected in a state of being separated from each other. It has the latching claw e-1 and f-1 which protruded outward in the part.

  The bracket h is configured by connecting a vertical wall piece i and a horizontal wall piece j in a substantially L-shaped cross section. The horizontal wall piece j has two sets of insertion pieces g and g. Hole-shaped holding parts k, k that are fitted and locked are formed.

  The vertical wall piece i of the bracket h is bent in a crank shape along the longitudinal direction, and at one end side, a band shape of a bag unit b inserted through an insertion hole a-1 formed on one side surface of the protector a. The ear b-1 is fastened by a fastening tool m such as a rivet, and a clip n for temporary fastening to a vehicle body (not shown) is fastened to the other end side. On the other hand, at a position close to the center side, a mounting hole o is provided for final fastening to the vehicle body with a screw or the like.

  In order to attach the bracket h to the protector a, the latching claws e-1 and f-1 are inserted into the holding parts k and k, respectively, so that the leg part e and the leg part f are elastically deformed. The insertion pieces g, g are inserted into the holding parts k, k, respectively, and when the locking claws e-1, f-1 get over the holding parts k, k, both leg parts e, When the elastic deformation of f is released and the locking claws e-1 and f-1 are hooked on the lateral wall pieces j and engage with the holding portions k and k, respectively, the protector a is supported by the bracket h. Become.

  In the conventional technology configured as described above, in order to facilitate the work of assembling the bracket h to the protector a, the insertion pieces g on the protector a side, and the locking claws e-1 and f-1 of the g. In this case, the bracket h is attached to the protector a, unitized with the bag c, and then transported or to the vehicle body. When assembled, both the locking claws e-1 and f-1 may easily come out of the lateral wall pieces j due to inadvertent elastic deformation or bending, and particularly as shown in FIG. In addition, when the bracket h is assembled to a portion where the protector a itself has a step in the longitudinal direction, the bracket h is easily detached from the protector a as a result. Tsu assembling the door h and protector a no longer have to be redone work.

  Therefore, in view of the above, the present invention provides an airbag device that simplifies the work of assembling the bracket to the protector and prevents the bracket and the protector from being easily detached from each other once assembled. The purpose is to do.

The airbag apparatus according to the present invention includes an airbag that is folded and stored along an upper edge of a vehicle body vertical wall portion and inflated and deployed along the vehicle body vertical wall portion by gas supplied from an inflator, and the folded air bag. An airbag device comprising a protector attached along a bag and a bracket for attaching the airbag to a vehicle body, wherein the bracket is formed of a belt-shaped flat plate and is opposite to one direction and the one direction. a pair of insertion piece portion extending in a direction, the protector, are erected apart from each other with a pair of holding pieces having an insertion portion capable of receiving each of the pair of insertion piece portions, the pair of the holding piece, at least one has the shape of a L-shape having a corner portion, and one of the holding pieces, the insertion piece portion of the one direction, the direction of the one It can be inserted with a predetermined large stroke, and can be returned with a predetermined small stroke in the opposite direction while being inserted, and the insertion piece portion in the opposite direction is the insertion piece portion in the one direction. The insertion piece portion in the opposite direction can be opposed to the insertion portion of the other holding piece in a state where it is inserted in the one direction with the large stroke and is returned in the small stroke. It is possible to insert through the insertion part of the other holding piece.

  With this configuration, the bracket can be easily attached to the protector even if the engagement width of each insertion piece portion to each insertion portion is larger than that of the prior art, and the airbag device can be attached to the vehicle body. The bracket can be prevented from being detached due to inadvertent deformation or bending of the protector during installation work, transportation or transportation.

The air bag system according to the present invention, by excising the corners of the protector which exhibits the L-shaped, may be configured so that to form said inserting portion.

Further, the protector in the airbag device according to the present invention includes a stopper that regulates the position of the bracket at the return position of the predetermined small stroke, and the stopper is close to the holding piece in the opposite direction on the protector side. And a fitting receiver that can be fitted at the return position of the predetermined stroke in the fitting protrusion provided on the insertion piece portion in the opposite direction on the bracket side. Also good .

With this configuration, the protector regulates the position of the bracket at the return position of the predetermined stroke by the stopper, so that the mounting state of the protector and the bracket is further strengthened, and the bracket is prevented from coming off against the deformation or bending of the protector. It can be surely prevented .

In addition, by adopting such a configuration, since the fitting protrusion is fitted in the fitting hole, the mounting state of the protector and the bracket is further strengthened, and the bracket is detached from the deformation and deflection of the protector. Can be surely prevented.

  According to the present invention configured as described above, the bracket can be easily attached to the protector even when the engagement width of each insertion piece portion to each insertion portion is ensured as compared with the prior art. The bracket can be prevented from being removed due to inadvertent deformation or bending of the protector during the operation of mounting the curtain airbag device to the vehicle body, transportation or transportation.

  Next, one embodiment according to the present invention will be described with reference to FIGS.

  FIG. 1 is a schematic side view depicting the vicinity of an opening of a vehicle equipped with a curtain airbag device adopting an embodiment of the present invention, and FIG. 2 is an enlarged perspective view of the X circle of FIG. 3 is a perspective view depicting the bracket in FIG. 2, FIG. 4 is a perspective view depicting the protector in FIG. 2, and FIG. 5 is a cross-sectional view depicting the initial stage of attaching the bracket in FIG. 3 to the protector in FIG. 6 is a cross-sectional view depicting an intermediate stage of attaching the bracket in FIG. 3 to the protector in FIG. 4, and FIG. 7 is a cross-sectional view depicting the final stage of attaching the bracket in FIG. 3 to the protector in FIG.

  First, in FIG. 1, the curtain airbag device 1 is disposed along the opening 10 a of the vehicle body 10, for example, above the side window 11, from the front pillar portion 12 through the roof side rail portion 13 to the rear pillar portion 14. Has been.

  As shown in FIG. 2, the curtain airbag device 1 includes a nylon bag 2 that is inserted into a sack 2a that is flexible and is folded into a sack 2a made of a normal thin cloth so as to form a long belt, and a bag 2 An inflator 3 for generating gas for inflating and deploying, a plurality of brackets 4 for attaching the bag 2 to the vehicle body 10 together with the inflator 3, and preventing the bag 2 and the vehicle body 10 from interfering with each other and the vehicle body 10 via the bracket 4 A plurality of protectors 5 (in the embodiment, three in the front and rear and the center of the vehicle body) supported as a unit are configured as a unit.

  Since the curtain airbag device 1 is unitized as described above, as shown in FIG. 4, first, the protector 5 (representing the protector 5 disposed on the rear side of the vehicle body 10 in the X circle of FIG. 1). Is formed in a substantially L-shaped cross section, and as shown in FIG. 2, the bag 2 inserted in the sack 2a in a folded state is covered by winding an adhesive tape (not shown). It is attached in a state.

  In the protector 5, a pair of holding pieces 6 and 7 are erected on a side surface 5 a that is an upper surface when the protector 5 is mounted on the vehicle body 10 with a predetermined width therebetween.

As shown in FIG. 4, each of the holding pieces 6 and 7 has one direction with respect to the axial direction of the protector 5 (in the direction indicated by the two-dot chain line in FIG. 5) and the opposite direction (in FIG. 6). solid arrow direction) erected on one side surface 5a of the protector 5 in the state along the plate-shaped supporting body portion 6a, 7a and the respective holding base portion 6a, and integrally projecting so as to intersect 7a the corner It is composed of holding parts 6b and 7b which have an L-shape having corners and are provided with insertion parts 6c and 7c at the corners .

  The holding base portion 7a on the holding portion 7 side has a rectangular fitting protrusion 7f formed on the extending direction surface side of the holding portion 7b, and the holding piece 7 while sandwiching both holding pieces 6 and 7 therebetween. In one side surface 5a at a position close to the side, an insertion hole 5b through which a band-shaped ear portion 2b formed to protrude from the bag 2 is formed.

  As shown in FIG. 3, the bracket 4 has a substantially U-shaped concave portion 4-1 formed at a position closer to one end side than the middle portion of the belt-shaped flat plate, and both end portions. Are formed to be narrow and form insertion pieces 4a and 4b, respectively.

  Further, a fitting hole 4c into which the fitting projection 7f on the protector 5 side is fitted is formed on the side of the bracket 4 close to the insertion piece portion 4b, and at the center side from the fitting hole 4c of the bracket 4. In this position, a mounting hole 4e for fitting the rivet 2c shown in FIG. 2 for fastening the ear 2b of the bag 2 is formed.

  An attachment hole 4-2 for attaching the bracket 4 to the vehicle body 10 is provided through the bottom 4-1a of the recess 4-1 of the bracket 4.

  A cut-and-raised piece 4-3 is formed on one side surface step portion 4-1b of the concave portion 4-1 of the bracket 4, and the cut-and-raised piece 4-3 attaches the bracket 4 to the vehicle body 10. At this time, the bracket 4 is positioned with respect to the vehicle body 10 by contacting the vehicle body.

  When the bracket 4 is attached to the protector 5 in the above configuration, first, as shown in FIG. 5, one insertion piece 4a of the bracket 4 is moved with a large stroke in the direction of the arrow in the two-dot chain line view. Then, the protector 5 is engaged with the insertion portion 6c on the one holding portion 6b side.

  Next, from this state, the other side of the bracket 4 is moved with respect to the protector 5 with a small stroke in the direction of the arrow of the solid line in FIG. 5, and as shown in FIG. The other insertion piece 4b of the bracket 4 is opposed to the insertion portion 7c in the non-insertion state.

  Next, the bracket 4 is slid onto the fitting projection 7f on the other holding portion 7b side (in the direction of the arrow in FIG. 6) of the protector 5, so that the free end side of the holding base portion 7a holds the holding portion 7b on the fixed side. As a result, it swings so as to be elastically deformed.

  When the fitting protrusion 7f on the holding portion 7b side of the protector 5 is fitted into the fitting hole 4c of the bracket 4, the holding base portion 7a returns to the original position and the other insertion piece portion of the bracket 4 is inserted. 4b is engaged with the insertion portion 7c on the other holding portion 7b side of the protector 5.

  As a result, the fitting protrusion 7f is fitted into the fitting hole 4c to form a stopper that restricts the position of the bracket 4 at the return position by the small stroke, and both the insertion piece portions 4a and 4b of the bracket 4 are The bracket 4 is attached to the protector 5 because it is engaged with the insertion part 6c of the holding part 6b on the protector side and the insertion part 7c of the holding part 7b.

  With this configuration, in the embodiment according to the present invention, of the pair of holding pieces 6 and 7 of the protector 5, the insertion portion 6 c of one holding piece 6 is connected to the insertion piece portions 4 a and 4 b of the bracket 4. The other insertion piece portion 4b on the one insertion piece portion 4a side is made to face in the non-insertion state, the bracket 4 is slid to the other holding piece 7 side, and the insertion portion 7c of the other holding piece 7 is inserted into the insertion portion 7c. Since the bracket 4 is attached to the protector 5 by engaging the other insertion piece 4b, the engagement of the insertion pieces 4a and 4b to the insertion portions 6c and 7c of the holding pieces 6 and 7 is achieved. Even if the width is secured larger than that of the prior art, the bracket 4 can be easily attached to the protector 5, and the curtain airbag device 1 can be attached to the vehicle body 10 or can be transported. Or during transport, it can be made as the bracket 4 does not come off by accidental deformation or deflection of the protector 5.

  In addition, in the state where one insertion piece portion 4 a is engaged with the insertion portion 6 c of one holding piece 6 and the other insertion piece portion 4 b is engaged with the insertion portion 7 c of the other holding piece 7, the fitting protrusion Since 7f is fitted in the fitting hole 4c, the mounting state of the protector 5 and the bracket 4 is further strengthened, and the removal of the bracket 4 is prevented more reliably against deformation and bending of the protector 5. be able to.

  In the present embodiment, the insertion pieces 4a and 4b that are inserted into the insertion portions 6c and 7c of the protector 5 are provided at both ends of the bracket 4, but the present invention is not limited thereto, and the insertion pieces 4a and 4b are not limited thereto. Can also be provided at locations other than both ends of the bracket 4. Moreover, it is also possible to provide each insertion part 6c, 7c of a pair of holding pieces 6 and 7 provided in the protector 5 in a large notch shape up to one side surface 5a of the protector 5, and a stopper is provided in the vicinity of the other insertion part. You may provide in one side 5a.

  FIG. 8 shows another embodiment according to the present invention.

  According to FIG. 8, the extending direction of the holding piece 6 with respect to the holding base portion 6 a in the holding portion 6 b and the extending direction of the holding piece 7 in the holding portion 7 b with respect to the holding base portion 7 a are opposite to each other. The configuration is different from the above embodiment, and other configurations are the same, and the same operation and effect are obtained.

  In any of the above embodiments, the holding pieces 6 and 7 are both constituted by the holding base portions 6a and 7a and the holding portions 6b and 7b formed so as to intersect with the holding base portions 6a and 7a. Since the base portions 6a and 7a serve as strength members for preventing the holding portions 6b and 7b from being inverted, if the holding portions 6b and 7b themselves have a predetermined rigidity, they may be abolished. it can.

  In any of the above embodiments, the fitting protrusion 7f is formed on the holding portion 7b side of the other holding piece 7 of the protector 4 and the fitting hole 4c is formed in the bracket 4. However, the present invention is not limited to this. Instead of this, the fitting protrusion 7 f may be formed on the bracket 4, and the fitting hole 4 c may be formed on the holding portion 7 b of the other holding piece 7 of the protector 4.

  As described above, according to the present invention, the bracket can be easily attached to the protector even if the engagement width of each insertion piece portion to each insertion portion is larger than that of the prior art. In order to prevent the bracket from being removed due to inadvertent deformation or bending of the protector at the time of attaching the bag device to the vehicle body, transporting or transporting, the airbag device that deploys to protect the occupant when the vehicle collides, in particular, It can be said that it is suitable for a curtain airbag device installed along the upper edge of the opening of the vehicle body.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic side view depicting the vicinity of an opening of a vehicle provided with a curtain airbag device employing one embodiment according to the present invention. It is the perspective view which expanded and drawn the inside of the X circle of FIG. It is the perspective view which drawn the bracket in FIG. It is the perspective view which drawn the protector in FIG. FIG. 5 is a cross-sectional view depicting an initial stage of attaching the bracket in FIG. 3 to the protector in FIG. 4. FIG. 5 is a cross-sectional view depicting an intermediate stage in which the bracket in FIG. 3 is attached to the protector in FIG. 4. FIG. 5 is a cross-sectional view depicting the final stage of attaching the bracket in FIG. 3 to the protector in FIG. 4. It is the cross-sectional view which drew the state which attached the bracket in other embodiment which concerns on this invention to the protector. It is the perspective view which drawn the state which assembled | attached the block to the protector in the conventional curtain airbag apparatus. It is AA sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Curtain airbag apparatus 2 Bag 3 Inflator 4 Bracket 4a One insertion piece part 4b The other insertion piece part 4c Fitting hole 5 Protector 6 One holding piece 6c Insertion part 7 The other holding piece 7c Insertion part 7f Fitting protrusion 10 Car body 10a opening

Claims (3)

An airbag that is folded and stored along the upper edge of the vehicle body vertical wall portion and inflated and deployed along the vehicle body vertical wall portion by gas supplied from an inflator, and a protector attached along the folded airbag. An airbag device comprising a bracket for attaching the airbag to a vehicle body,
The bracket includes a pair of insertion piece portions that are formed of a belt-like flat plate and extend in one direction and the opposite direction to the one direction.
The protector includes a pair of holding pieces standing upright apart from each other and having insertion portions that can receive each of the pair of insertion piece portions, and at least one of the pair of holding pieces has a corner portion. It has an L shape,
In addition, one of the holding pieces has an insertion piece portion in one direction that can be inserted in the one direction with a predetermined large stroke, and the insertion piece remains in the insertion state with a predetermined small stroke in the opposite direction. Made possible to return,
The insertion piece portion in the opposite direction can be opposed to the insertion portion of the other holding piece in a state where the insertion piece portion in the one direction is inserted in the one direction with the large stroke, and In the state returned by a small stroke, the insertion piece portion in the opposite direction can be inserted into the insertion portion of the other holding piece,
An airbag device characterized by that. The airbag device according to claim 1 , wherein the insertion portion is formed by cutting out the corner portion of the protector having the L shape . The protector includes a stopper that restricts the position of the bracket at the return position of the predetermined small stroke, and the stopper is provided in the proximity of the holding piece in the opposite direction on the protector side, and the bracket claim 1 or claim characterized in that it is composed of a matable Hamago受the return position of the predetermined stroke in the fitting projection provided on the insertion piece portion of the opposite direction of the side 2. The airbag device according to 2.

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