JP5287707B2 - Head protection airbag device - Google Patents

Description

  The present invention provides a head comprising: an airbag that covers the inside of a vehicle window when deployed and inflated; and a protector made of synthetic resin that covers the periphery of a long folded body formed by folding the airbag. The present invention relates to a part protection airbag device.

  In this type of head protection airbag device, the airbag is mounted on the upper edge side when the inflation is completed by using a substantially flat plate-shaped mounting bracket of the vehicle on the upper edge side of the window. Conventionally, as a head protection airbag device, the protector has a protector body that covers the periphery of the folded body, and is formed so as to protrude from the protector body, and is disposed in the vicinity of the mounting portion. And a connecting portion that is mounted on the vehicle body and mounted on the vehicle body in an integrated state with the folded body by connecting the connecting portion to the mounting bracket. (For example, refer to Patent Documents 1 and 2).

  In the head protection airbag device of Patent Document 1, when the protector and the mounting bracket are connected, the locking clip as the connecting portion extending from the protector is inserted into the locking hole formed in the mounting bracket, and then attached. The bracket is rotated by 90 ° with respect to the protector, and the locking clip is locked to the periphery of the locking hole to connect the protector and the mounting bracket.

  Moreover, in the head protection airbag apparatus of patent document 2, it is the structure which connects the front-and-rear both-edges side of a mounting bracket to the connection part extended from a protector, and the rear side insertion formed in a connection part is the rear edge of a mounting bracket A locking projection formed near the front insertion hole of the connecting portion by inserting the front edge of the mounting bracket into the front insertion hole formed in the connecting portion while inserting the mounting bracket through the hole and inclining the mounting bracket largely with respect to the front-rear direction. The protector and the mounting bracket are connected by passing through the mounting bracket.

Japanese Unexamined Patent Publication No. 2009-6687 JP 2009-6892 A

  However, in each of the head protection airbag devices described in Patent Documents 1 and 2, it is necessary to largely move the mounting bracket along the front-rear direction or the left-right direction with respect to the protector. The connection work with was not easy. Further, in the head protection airbag device described in Patent Documents 1 and 2, the mounting bracket cannot be fixed to the airbag mounting portion in advance, and the protector and the mounting bracket are connected and then folded. At the same time that the completed body is stored in the protector, the mounting portion of the airbag needs to be fixed to the mounting bracket by inserting the insertion hole provided in the protector, so the mounting bracket is attached to the mounting portion of the airbag. The attachment workability at the time was not good, and there was room for improvement in that the protector was easily attached to the folded body.

  The present invention solves the above-described problems, and an object of the present invention is to provide a head protection airbag device capable of easily attaching a protector to a folded body.

The head protection airbag device according to the present invention is made of a synthetic resin that covers an airbag covering the inside of a vehicle window during deployment and inflating, and a long folded body formed by folding the airbag. And a protector.
As a configuration in which the airbag is attached to the body side of the vehicle on the upper edge side of the window, using the substantially flat plate metal mounting bracket, the mounting portion arranged on the upper edge side when the inflation is completed,
The protector includes a protector main body that covers the periphery of the folded body, and a connecting portion that is formed so as to protrude from the protector main body and is disposed in the vicinity of the mounting portion, and by connecting the connecting portion to the mounting bracket. The head protection airbag device is configured to be mounted on the vehicle and attached to the body side in an integrated state with the folded body,
The mounting bracket is fixed to the mounting portion, and is provided with a mounting hole through which a mounting means for mounting the mounting portion on the body side can be inserted substantially at the center,
An insertion opening penetrating the inner and outer peripheries of the protector main body is formed in the vicinity of the connecting portion in the protector main body so that the mounting bracket fixed to the mounting portion can be inserted together with the mounting portion.
In a region around the mounting portion in the mounting bracket and the connecting portion, one of the mounting bracket and the connecting portion has a shaft portion extending in the vehicle interior / exit direction, and a claw body extending from the tip side of the shaft portion so as to intersect the shaft portion. A latching claw portion is formed, and on the other side, a latching edge portion that is formed along the opening surface of the mounting hole and is latched by the latching claw portion is formed,
The mounting bracket fixed to the mounting part is projected over the protector body through the insertion opening, and overlapped with the connecting part in the vehicle interior / exit direction, so that the locking claw part or the locking edge It is the structure connected with a connection part by making a latching claw part latch to a latching edge part, bending at least one of the parts.

  In the head protection airbag device of the present invention, in the folded body formed by folding the airbag, the mounting portion in a state where the mounting bracket is fixed in advance protrudes above the protector from the insertion opening of the protector. If the mounting bracket is overlapped with the protector connecting part in the inside and outside of the car and moved so that the mounting bracket and the connecting part approach each other in the car inside and outside, the mounting bracket and the connecting part At least one of the formed locking claw part or the other locking edge part on the other side bends in the vehicle interior / exit direction, and the locking claw part is locked to the locking edge part. The bracket and the connecting portion can be connected. That is, in the head protection airbag device of the present invention, the mounting bracket and the connecting portion can be connected without greatly moving the mounting bracket with respect to the protector. It is easy compared with the head protection airbag device. In addition, since the mounting bracket can be fixed to the mounting portion in advance, the protector can be mounted on the folding completed body by connecting the mounting bracket and the connecting portion. Therefore, the protector can be easily attached to the folded body as compared with the conventional head protection airbag device.

  Therefore, in the head protection airbag device of the present invention, the protector can be easily attached to the folded body.

  In the head protection airbag device of the present invention, the protector can be attached to the completed folding body while suppressing the displacement when the mounting bracket and the connecting portion are connected. Even if it is not the structure attached to the body side of this, it can mount in a vehicle in the state which suppressed the position shift of a protector with respect to a folding completion body. Therefore, the protector can secure a state in which the airbag can be protruded and protect the airbag until immediately before the operation, so that the airbag can be inflated smoothly during the operation.

  Further, in the head protection airbag device of the present invention, if the locking claw portion is formed on the mounting bracket and the locking edge portion is formed on the connecting portion, the locking claw portion is formed on the connecting portion. Compared with the case where the protector is made, it becomes easier to manufacture the protector made of synthetic resin, and since the locking claw is made of sheet metal, the locking edge is firmly locked by the locking claw. Is preferable.

  Furthermore, in the head protection airbag device having the above-described configuration, if the locking claw portion and the locking edge portion are configured to be formed on at least one side in the front-rear direction of the mounting portion, the mounting bracket and the connecting portion are Since it is connected on the direction side along the longitudinal direction of the long folded body, it is connected to the mounting bracket even when the folded body stored in the protector is transported before being mounted on the vehicle. The connection state between the mounting bracket and the connection portion can be stably maintained, and the connection state with the portion is difficult to be released, which is preferable.

  Furthermore, in the head protection airbag device having the above-described configuration, if the locking claw portion and the locking edge portion are formed on both front and rear sides of the mounting portion, the mounting bracket is connected to the connecting portion inside and outside the vehicle. It is difficult to move along the direction, which is preferable.

Furthermore, in the head protection airbag device having the above-described configuration, the locking edge portion is formed in the connecting portion, and is configured as a section shape extending toward the locking claw portion side along the front-rear direction. And
The claw body in the locking claw portion is configured to be spaced apart from each other, and at the time of connection between the mounting bracket and the connection portion, the claw body is disposed at a position overlapping the locking edge portion in the vehicle interior / exterior direction. It is preferable.

  In the head protection airbag device having the above-described configuration, the locking edge portion is configured as a section shape that extends toward the locking claw portion along the front-rear direction. That is, in the head protection airbag device having the above-described configuration, in the locking edge portion, the region on the base portion side with less bending is disposed at a position away from the locking claw portion, and the region on the distal end side with large bending is It is arrange | positioned at the latching claw part side. Therefore, if the mounting bracket is moved to the connecting portion side along the in-vehicle outside direction so as to be inserted between the engaging edge portions in the connecting portion, the region on the tip side of the engaging edge portion can be easily moved in the in-vehicle direction. It can be bent at the side, and the connecting workability between the mounting bracket and the connecting portion is further improved. Further, in the head protection airbag device having the above configuration, when the mounting bracket is viewed from the vehicle inner side with the connecting portion and the mounting bracket being connected, the locking edge and the nail body at the locking claw portion Since they are arranged in an overlapping manner, the connection state between the connecting portion and the mounting bracket can be easily confirmed visually.

  Furthermore, in the head protection airbag device having the above-described configuration, if the outer shape of the locking edge viewed from inside and outside the vehicle is configured to be narrower toward the front end, the locking edge is Although it is easy to bend with a narrow width, the base side is wide and it is possible to secure bending rigidity, so when pressed by the locking claw, the locking edge is bent with a large bending load. be able to. Then, the locking edge that has been bent by increasing the bending load will be restored with a large restoring force when being restored away from the locking claw, and at the time of restoration, the nail body of the claw body in the locking claw is restored. A sound can be generated at the moment of hitting the tip again. For this reason, since the locking state between the locking claw portion and the locking edge portion can be confirmed by this sound, even when it is difficult to visually check the area of the locking claw portion, the connection state between the connecting portion and the mounting bracket is further increased. It is easy to confirm and preferable.

It is the figure seen from the vehicle inner side which shows the mounting state to the vehicle of the head protection airbag apparatus which is one Embodiment of this invention. It is a general | schematic expanded longitudinal cross-sectional view in the vehicle mounting state of the head protection airbag apparatus of embodiment, and respond | corresponds to the II-II site | part of FIG. It is a figure which shows the state which folded the airbag used in the head protection airbag apparatus of embodiment from the state which expand | deployed flat. It is a front view of the protector used for the head protection airbag device of an embodiment. In the protector of FIG. 4, it is a partial enlarged front view which shows the connection part vicinity. It is sectional drawing of the VI-VI site | part of FIG. It is sectional drawing of the VII-VII site | part of FIG. It is a front view of the inner side plate in the attachment bracket used for the head protection airbag device of an embodiment. It is sectional drawing of the IX-IX site | part of FIG. In the head protection airbag device of an embodiment, it is a partial expansion front view showing the state where the attachment bracket fixed to the attachment part of the airbag and the connection part of the protector were connected. It is sectional drawing of the XI-XI site | part of FIG. It is sectional drawing of the XII-XII site | part of FIG. It is sectional drawing of the XIII-XIII site | part of FIG. In the head protection airbag device of an embodiment, it is a partial expansion outline sectional view showing the connection process of the attachment bracket fixed to the attachment part, and the connection part of a protector. FIG. 15 is a partially enlarged schematic cross-sectional view showing a connection process between the attachment bracket fixed to the attachment portion and the connection portion of the protector in the head protection airbag device of the embodiment, and shows a state after FIG. 14. It is a front view which shows the airbag assembly | attachment body in the head protection airbag apparatus of embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, a head protection airbag apparatus M according to an embodiment allows a airbag ( Side window) W1 and W2 can be covered and folded to the upper edge side of windows W1 and W2, that is, in the region from the front pillar portion FP to the upper portion of the rear pillar portion RP through the roof side rail portion RR. It is stored so that it follows the direction. The vehicle V is of a two-row seat type, and has a configuration in which one intermediate pillar portion CP disposed substantially along the vertical direction is disposed between the front pillar portion FP and the rear pillar portion RP. The airbag 18 at the completion of the inflation is configured to cover the inside of the pillar garnish 7 disposed inside the intermediate pillar portion CP as well as the windows W1 and W2.

  Unless otherwise specified, the front and rear, top and bottom, and left and right directions in this specification correspond to the front and rear, top and bottom, and left and right directions of the vehicle V on which the head protection airbag device M is mounted.

  As shown in FIG. 1, the head protecting airbag device M includes an airbag 18, an inflator 10 that supplies inflation gas to the airbag 18, mounting brackets 11 and 36, mounting bolts 12 and 46, and the airbag 18. , And a protector 49 that covers the periphery of the folding completion body 34 formed by folding. When the airbag 18 (folded body 34), the inflator 10, and the protector 49 are folded into the vehicle V, the vehicle interior I is covered with the airbag cover 16 (see FIG. 2). In the case of the embodiment, the airbag cover 16 includes a lower edge 5a of the pillar garnish 5 that covers the inside of the front pillar portion FP, and a lower edge 6a of the roof head lining 6 that covers the inside of the roof side rail portion RR. It is configured.

  The pillar garnish 5 and the roof head lining 6 are made of synthetic resin together with a pillar garnish 7 that covers the inner side of the intermediate pillar part CP and a pillar garnish 8 that covers the inner side of the rear pillar part RP. It is attached to the inner side of the inner panel 2 which is a member on the body 1 side in the pillar part FP and the roof side rail part RR. And the airbag cover 16 comprised from these lower edges 5a and 6a is pushed by the airbag 18, and the lower edges 5a and 6a side is opened to the vehicle inside I so that the airbag 18 at the time of expansion | deployment can protrude. (Refer to the two-dot chain line in FIG. 2).

  As shown in FIGS. 1 and 16, the inflator 10 has a substantially cylindrical shape, and is configured by disposing a gas discharge port (not shown) capable of discharging an inflation gas on the tip (front end) side. And this inflator 10 inserts the vicinity of the tip including the gas discharge port into a connection port 24 to be described later of the airbag 18, and uses the clamp 13 that is externally installed near the rear end of the connection port 24, It is connected to the connection port 24 of the airbag 18. Further, the inflator 10 uses the mounting bracket 11 that holds the inflator 10 and the mounting bolt 12 for fixing the mounting bracket 11 to the inner panel 2 on the body 1 side, so that the inner panel is located at the rear pillar portion RP. 2 is attached.

  In the case of the embodiment, the airbag 18 is formed by bag weaving using polyamide yarn, polyester yarn, or the like, and as shown in FIG. A gas inflow portion 19 that expands away from the portion 19b, and a non-inflow portion 26 that is formed so as to connect the vehicle inner wall portion 19a and the vehicle outer wall portion 19b to each other and does not allow the expansion gas to flow in. Has been. The gas inflow part 19 includes a protective expansion part 20, a gas supply path part 23, and a connection port part 24, and the non-inflow part 26 includes a peripheral edge part 27, an attachment part 28, and plate-like parts 30 and 31. And the partition part 32 is provided and comprised.

  The protective inflating portion 20 of the gas inflow portion 19 is disposed on the side of the rear seat and the front protecting portion 21 that covers the inside of the window W1 disposed on the side of the front seat when the airbag 18 is completely inflated. And a rear protection portion 22 that covers the vehicle interior side of the window W2. The gas supply path 23 extends forward from the connection port 24 on the upper edge 18 a side of the airbag 18, and supplies the inflation gas G from the connection port 24 to the front protection part 21 and the rear protection part 22. It is a part to do. The connection port portion 24 is arranged on the rear end side of the upper edge 18a side of the airbag 18, and is a portion connected to the inflator 10 as described above. The front protection part 21 and the rear protection part 22 are each provided with a plurality of cells 20a that are partitioned by a partition part 32 and a plate-like part 30 and arranged in parallel in the front-rear direction. It is configured. Each cell 20a is configured as a substantially rod shape with the upper end communicating with the gas supply path portion 23 and extending in the vertical direction. In the embodiment, four cells 20a are provided in the area of the front protection portion 21. The three cells 20a are arranged in parallel in the region of the rear protection part 22 arranged in parallel.

  The peripheral edge 27 constituting the non-inflow portion 26 is disposed on the outer peripheral edge of the gas inflow portion 19. The plate-like part 30 is disposed between the front protection part 21 and the rear protection part 22 below the gas supply path part 23 as a substantially rectangular plate shape. In the case of the embodiment, the partition portion 32 partitioning the cells 20a is configured as a substantially T shape or a horizontally placed F shape extending from the peripheral portion 27.

  A plurality of attachment parts 28 (five in the embodiment) are arranged along the front-rear direction so as to protrude upward on the upper edge 18a side of the airbag 18 including the plate-like part 31. An insertion hole 28a through which a mounting bolt 46 as a mounting means for mounting on the inner panel 2 on the body 1 side can be inserted is provided substantially at the center. In the case of the embodiment, the airbag 18 is moved from the state in which the vehicle inner side wall portion 19a and the vehicle outer side wall portion 19b are flattened so that the lower edge 18b side approaches the upper edge 18a side. The vehicle is folded and mounted on the vehicle V so as to form a long folding completion body 34. In the case of the embodiment, the airbag 18 has a plurality of folds C parallel to the upper edge 18a along the front-rear direction, and the bellows folds such that the lower edge 18b side approaches the upper edge 18a side, Folded (see B in FIG. 3). And each attachment part 28 will be arrange | positioned so that it may protrude upward from the upper surface of this folding completion body 34 (refer B of FIG. 3). If it demonstrates in detail, each attaching part 28 will be arrange | positioned so that it may extend upward from the edge vicinity of the vehicle outer side O in the folding completion body 34 (refer FIG. 2).

  As shown in FIGS. 2 and 10 to 13, the mounting brackets 36 are mounted on the front and back of each mounting portion 28 so as to be sandwiched between an inner plate 37 and an outer plate 44 described later of the mounting bracket 36. 36 is configured to be attached to the inner panel 2 on the body 1 side. Each mounting portion 28 is configured such that, when the mounting bracket 36 is mounted, the upper edge side protrudes above the mounting bracket 36, and each insertion hole 28 a formed in the mounting portion 28 has a mounting bolt 46. Is set to a size that allows the head 46a to be inserted. That is, in the embodiment, when the mounting bracket 36 is mounted on the front and back of the mounting portion 28 and the mounting bolt 46 is fastened to the nut 2b disposed on the periphery of the mounting hole 2a of the inner panel 2, the mounting bolt 46 is The head 46a does not overlap the periphery of the insertion hole 28a when viewed from the inside of the vehicle. That is, in the embodiment, the mounting portion 28 is not interposed between the head 46a and the inner panel 2, and only the mounting bracket 36 is interposed (see FIG. 2). Specifically, in the case of the embodiment, the insertion hole 28a is opened in a substantially rectangular shape whose longitudinal direction is substantially along the vertical direction so that the entire center side portion 38b described later in the inner plate 37 of the mounting bracket 36 can be inserted. doing.

  The mounting bracket 36 is made of sheet metal. In the case of the embodiment, as shown in FIGS. 2 and 10 to 13, an inner plate 37 disposed so as to cover the vehicle inner side I of the mounting portion 28, and the mounting portion The outer plate 44 is arranged so as to cover the 28 vehicle outer sides O. Mounting holes 37 a and 44 a through which mounting bolts 46 as mounting means can be inserted are formed at substantially the center of the inner plate 37 and the outer plate 44. Further, in the case of the embodiment, the attachment bracket 36 has an attachment hole in a state where the inner plate 37 and the outer plate 44 are arranged on the front and back of the attachment portion 28 and the attachment portion 28 is sandwiched between the inner plate 37 and the outer plate 44. The caulking portions 36 a that protrude toward the vehicle inner side I are formed on both the front and rear sides of 37 a and 44 a, so that they are fixed to the mounting portion 28. More specifically, the caulking portion 36 a is formed near both ends in the front-rear direction of the mounting bracket 36. In the front and rear sides of the mounting holes 37a and 44a in the inner plate 37 and the outer plate 44, in the vicinity of the end portions in the front-rear direction, the deformation planned portions 37b and 44b constituting the caulking portion 36a are substantially along the vertical direction. Is formed.

  As shown in FIGS. 8 and 9, the inner plate 37 includes a substantially flat panel main body 38 and locking claws 40 formed on both front and rear edges of the panel main body 38. The mounting hole 37a and the planned deformation portion 37b are formed in the region of the panel body 38 in the inner plate 37.

  The panel main body 38 is a substantially rectangular plate shape whose outer shape is substantially along the longitudinal direction so as to cover the vehicle interior I of the mounting portion 28. In the case of the embodiment, the upper edge side and the lower edge side. In addition, reinforcing ribs 39, 39 that are bent so as to protrude toward the vehicle interior side I are disposed over substantially the entire front and rear (see FIGS. 9, 12, and 13). Further, as shown in FIGS. 8 and 9, the panel body 38 is formed with cuts 38a, 38a extending in the vertical direction over substantially the entire upper and lower portions in the front and rear sides of the mounting hole 37a formed in the center. The central portion 38b between the cuts 38a and 38a is configured to protrude further toward the vehicle outer side O than the end side portions 38c and 38c that are the front side or the rear side of the cut 38a. The central side portion 38b can be inserted into an insertion hole 28a formed in the attachment portion 28, and the step between the central side portion 38b and the end side portion 38c is the thickness of the attachment portion 28 in the airbag 18. It is set to about minutes. When the mounting bracket 36 is fixed to the mounting portion 28 of the airbag 18, the central side portion 38 b passes through the insertion hole 28 a of the mounting portion 28, and the vehicle outer side surface substantially entirely covers the vehicle inner side surface of the outer plate 44. It will contact. The width dimension in the front-rear direction of the central portion 38b is set to be larger than the outer diameter dimension of the head 46a of the mounting bolt 46, and in the case of the embodiment, it is about 1/3 of the width dimension in the front-rear direction of the panel body 38. Is set. The planned deformation portions 37b and 37b are formed in the regions of the end side portions 38c and 38c.

  The locking claws 40 are formed on both front and rear edges of the panel body 38. That is, the locking claw portion 40 is formed in the front and rear side regions around the attachment portion 28. Each locking claw portion 40 is formed at a position that is substantially in the middle between the front and rear edges of the panel body 38, and a shaft portion that extends from the front edge or rear edge of the panel body 38 toward the vehicle interior I. 41, and a claw body 42 that extends from the tip of the shaft part 41 toward the front or rear so as to be separated from the panel body 38 side while intersecting the shaft part 41. That is, in the case of the embodiment, the front and rear claw bodies 42 are separated from each other at the tip 42a side, and further, the tip 42a is inclined with respect to the shaft portion 41 so as to face the vehicle outer side O, Is formed. In this locking claw portion 40, the tip 42 a of the claw main body 42 is locked to a locking piece portion 60 formed in a connecting portion 54 described later of the protector 49. Specifically, the locking claw portion 40 is configured so that the claw main body 42 is connected to the locking piece portion 60 and the inside / outside direction of the locking piece portion 60 in the state where the mounting bracket 36 is connected to the connecting portion 54. ), The tip 60a side of the locking piece 60 is locked by the claw body 42 (see FIGS. 10 and 11).

  The outer plate 44 is configured as a rectangular plate having an outer shape substantially coincident with the outer shape of the panel body 38 in the inner plate 37, and includes an attachment hole 44a and planned deformation portions 44b and 44b. As shown in FIGS. 11 to 13, a locking piece 44 c that protrudes toward the vehicle outer side O is formed on one edge portion (front edge side in the illustrated example) of the outer plate 44 in the front-rear direction. . The locking piece 44c is locked at the periphery in a locking hole 2c (see the two-dot chain line in FIG. 11) formed in the inner panel 2 when mounted on the vehicle V. The inner panel of the mounting bracket 36 2 for positioning at the time of mounting to 2 and for preventing the mounting bracket 36 from rotating when the mounting bolt 46 is fastened.

  The protector 49 covers the periphery of the long folding completion body 34 formed by folding the airbag 18, and the handling workability of the airbag assembly AM (see FIG. 16) during transportation is good. And it is used in order to protect the airbag 18 from members on the vehicle body side, such as the inner panel 2 made of sheet metal, when protecting the airbag 18 during transportation. In the case of the embodiment, the protector 49 is formed from a synthetic resin such as an olefin-based thermoplastic elastomer. In the case of the embodiment, as shown in FIGS. 4 and 16, the protector 49 includes a front side part 50 </ b> F that covers the periphery of the area of the front protection part 21 in the folded airbag 18 (folded body 34), and a rear protection. It is divided into two parts, a rear part 50B that covers the region of the part 22. The front part 50F and the rear part 50B are connected to each other by a predetermined connecting member 63 between adjacent ends (between the rear end of the front part 50F and the front end of the rear part 50B). The connecting member 63 is configured to be able to release the connected state between the front portion 50F and the rear portion 50B. In the case of the embodiment, in the folding completion body 34, the portion configured by folding the front plate portion 31 of the front protection portion 21 is not covered by the front portion 50 F on the outer peripheral side, and the plate portion 31. The mounting portion 28 disposed in the part is attached to the inner panel 2 using only the mounting bracket 36.

  As shown in FIGS. 4 to 7, the front part 50 </ b> F and the rear part 50 </ b> B constituting the protector 49 are formed so as to protrude from the protector main body 51 and the protector main body 51, respectively. And a connecting portion 54 disposed in the vicinity of the attaching portion 28.

  The protector main body 51 extends downward from both edges of the ceiling wall 51a covering the upper surface side of the folding completion body 34 and the vehicle inner side I and the vehicle outer side O of the ceiling wall 51a, and the vehicle inner side I and the vehicle outer side of the folding completion body 34. The side wall 51b and 51c which cover O are set as the cross-sectional substantially reverse U-shape (refer FIG. 2, 7). That is, the protector main body 51 is configured to cover the vehicle inner side I, the vehicle outer side O, and the upper side of the folding completion body 34 so as to open the lower side. A protruding opening 51d is formed (see FIG. 2). In the protector main body 51, an insertion opening 52 through which the attachment bracket 36 fixed to the attachment portion 28 can be inserted together with the attachment portion 28 is located near the portion where the attachment portion 28 is disposed (the vicinity of the connecting portion 54). It is formed so as to penetrate the inner and outer peripheries of the protector body 51. In the case of the embodiment, the insertion opening 52 has the connection portion 54 of the side wall 51c arranged on the vehicle outer side O so that the inserted attachment portion 28 and the attachment bracket 36 are arranged on the vehicle outer side O of the connection portion 54. A lower region (a region between support frames 55 and 55 to be described later) and a region between the support frames 55 and 55 on the ceiling wall 51a are formed by cutting out, and more specifically, an insertion opening. 52, the opening width dimension in the front-rear direction is made larger than the width dimension in the front-rear direction of the mounting bracket 36 so as to substantially match the width dimension in the front-rear direction of the connecting portion 54. It is formed slightly larger than 1/2 of the width dimension (see FIGS. 5 to 7).

  The connecting portion 54 is formed at a position corresponding to the mounting portion 28 and the mounting bracket 36, and is disposed at a position near the mounting portion 28 so as to protrude upward from the ceiling wall 51 a of the protector body 51. Yes. In the case of the embodiment, two connecting portions 54 are disposed in the front portion 50F and the rear portion 50B, respectively, corresponding to the mounting portion 28 disposed on the upper side of the protective inflating portion 20 in the airbag 18. (See FIG. 4). Further, in the case of the embodiment, the connecting portions 54 correspond to the locking claw portions 40 disposed on the front and rear sides of the inner plate 37 in the mounting bracket 36, in the front and rear side regions around the mounting portion 28. As shown in FIGS. 5 to 7, two support frames 55 each having a substantially rectangular frame shape and projecting upward from the ceiling wall 51 a of the protector body 51 and penetrating inward and outward as shown in FIGS. , 55 and a section-like locking piece 60 (locking edge) extending from the outer wall 56 on the end side in the front-rear direction of each support frame 55 toward the center side in the front-rear direction. ing.

  Each support frame 55 is formed so as to protrude upward from the ceiling wall 51a of the protector body 51. When the mounting bracket 36 is attached to the connecting portion 54, each support frame 55 is viewed from the vehicle inner side I. It is made into the substantially rectangular frame shape which surrounds the circumference | surroundings of the latching claw part 40 over a perimeter (refer FIG. 5, 10). In other words, each support frame 55 is configured to open in and out of the vehicle so that the locking claw portion 40 can be inserted. The support frame 55 is configured such that the mounting bracket 36 fixed to the mounting portion 28 is attached to the connecting portion 54, and the vehicle outer surface is the opening surface of the mounting holes 37 a and 44 a in the mounting bracket 36 (in the mounting bracket 36. The inner plate 37 is configured so as to be substantially aligned with the inner surface of the panel main body 38 (see FIG. 11). In each support frame 55, the outer wall 56 arranged on the end side in the front-rear direction so as to cover the end side in the front-rear direction of the locking claw 40 (the front end 42 a side of the claw body 42), and the locking claw 40 The upper wall 57 disposed so as to cover the upper side of the entire area of the upper wall 57 so as not to expose the locking claw portion 40 so as to prevent contact between the locking claw portion 40 and the folding completion body 34 during transportation or the like. Over the vehicle interior I (see FIGS. 6 and 7). Further, in each support frame 55, the inner wall 58 disposed on the center side in the front-rear direction of each locking claw portion 40 (on the shaft portion 41 side) is attached to the attachment bracket 36 when the attachment bracket 36 is attached to the connecting portion 54. Is formed so as to protrude toward the vehicle outer side O so as to come into contact with the vehicle inner side surface of the inner plate 37 (panel main body 38) (see FIGS. 6 and 11).

  The locking piece portion 60 as the locking edge portion extends along the front-rear direction from the outer wall 56 positioned on the end side in the front-rear direction of each support frame 55 (on the front end 42a side of the claw body 42 in the locking claw portion 40). Thus, it is configured as a section shape extending toward the locking claw portion 40 (extending toward the center in the front-rear direction). That is, as shown in FIG. 5, the locking piece portions 60 and 60 are configured so that the ends 60 a and 60 a side approach each other. Each locking piece 60 extends along the vehicle outer surface of the outer wall 56 so that the vehicle outer surface coincides with the vehicle outer surface of the outer wall 56 of the support frame 55, that is, the mounting holes 37 a and 44 a in the mounting bracket 36. Are formed so as to extend along the opening surface (which coincides with the in-vehicle side surface of the panel body 38 of the inner plate 37 in the mounting bracket 36). In other words, each locking piece 60 is formed substantially along the opening surface of the opening 55a on the vehicle outer side O so as to partially close the opening 55a on the vehicle outer side O in the support frame 55. Each locking piece 60 is configured such that the outer shape viewed from the inside / outside direction of the vehicle is narrowed toward the front end 60a side. In the case of the embodiment, each locking piece 60 has a substantially isosceles triangular shape that converges from the vehicle inner side I toward the front end 60a (see FIG. 5). The gap (separation distance) between the tip 60a of the locking piece 60 and the inner wall 58 of the support frame 55 in the non-flexed state can be inserted through the shaft 41 of the locking claw 40 and cannot be inserted through the claw body 42. Is set to a large size.

  Further, the locking piece portion 60 is pressed against the claw body 42 of the locking claw portion 40 when each locking claw portion 40 is inserted into the opening 55a on the vehicle outer side O of the support frame 55. The tip 60a can be bent so that the side of the front end 60a is directed toward the vehicle interior side I, and after being locked to the locking claw portion 40, the thickness dimension is such that the locking state with the locking claw portion 40 can be maintained. Is set. Furthermore, in the case of the embodiment, each locking piece 60 is configured to be slightly reduced in thickness toward the tip 60a side so as to be easily bent in the vehicle interior / exit direction (see FIG. 14A). . Then, the locking piece portion 60 has the tip 60 a side positioned on the vehicle outer side O of the tip 42 a of the claw body 42 in the locking claw portion 40 in a state where the mounting bracket 36 is connected to the connecting portion 54, and the claw It is comprised so that it may overlap with the main body 42 in a vehicle inside / outside direction (refer C of FIG.10,11,15).

  Next, the mounting of the head protection airbag device M on the vehicle V will be described. First, as shown in FIG. 3A, the airbag 18 is brought into a non-inflated state and the vehicle interior side wall portion 19a and the vehicle exterior wall are set. The area of the connection port portion 24 is removed from the state where the portion 19b is flattened so as to overlap with the crease C parallel to the upper edge 18a and the lower edge 18b side approaching the upper edge 18a side. Then, folding is performed by bellows folding, and then, as shown in FIG. 3B, a wrapping material 65 that can be broken is wrapped around the folded airbag 18 except for the region of the attachment portion 28, and the folding is completed. A body 34 is formed. The inner plate 37 and the outer plate 44 are arranged on the front and back of each mounting portion 28, the portions of the deformable portions 37 b and 44 b are caulked to form a caulking portion 36 a, and the mounting bracket 36 is fixed to the mounting portion 28. Thereafter, the region of the front protection part 21 in the folding completion body 34 is accommodated in the front part 50F of the protector 49, and the region of the rear protection part 22 in the folding completion body 34 is accommodated in the rear part 50B of the protector 49. .

  At this time, the mounting portion 28 to which the mounting bracket 36 is fixed is protruded upward from the protector main body 51 so as to be positioned on the vehicle outer side O of the connecting portion 54 through the insertion opening 52 of the protector main body 51. As shown in FIG. 14A, the bracket 36 is overlapped with the vehicle outer side O of the connecting portion 54, and the mounting bracket 36 together with the mounting portion 28 is inserted into the vehicle inner side I so that each locking claw portion 40 is inserted into the support frame 55. If it is moved toward, the locking piece portion 60 provided on the connecting portion 54 is pushed by the claw body 42 of the locking claw portion 40 and bends so that the front end 60a faces the vehicle inner side I. (See B in FIG. 14 and A in 15). Then, the locking piece 60 is further bent so as to move the tip 60a from the base part side of the claw body 42 toward the tip 42a side, and the locking claw part 40 as a whole is the tip 60a of the locking piece part 60. When the tip 60a of the locking piece 60 reaches the tip 42a of the claw body 42 and is separated from the claw body 42, the locking piece is inserted into the gap between the claw body 42 and the inner wall 58 (see FIG. 15B). The portion 60 is restored, and the locking claw portion 40 locks the claw body 42 in the vicinity of the tip 60a of the locking piece portion 60, thereby connecting the connecting portion 54 and the mounting bracket 36. Yes (see C in FIG. 15).

  In the head protection airbag device M of the embodiment, the support frames 55 and 55 of the connecting portion 54 that supports the locking piece portions 60 that are locked to the locking claws 40 are separated in the front and rear directions. Therefore, when the mounting bracket 36 is moved toward the vehicle interior I, the support frames 55 and 55 are also moved in the front-rear direction when the locking piece 60 bends so that the tip 60a faces the vehicle interior I. It will bend slightly so as to be separated from each other. In FIGS. 15A and 15B, the support frame 55 is bent so as to move forward relative to the mounting bracket 36. Therefore, in order to secure a sufficient locking force, after locking the locking claw portion 40 with the locking piece portion 60, there is a large area where the locking claw portion 40 and the locking piece portion overlap in the vehicle interior / exterior direction. Even if it is set, the locking claw portion 40 can be locked to the locking piece 60 without hindrance. The bending of the support frames 55 and 55 is restored when the locking claw 40 is locked to the locking piece 60 (see C in FIG. 15).

  Thereafter, the front portion 50F and the rear portion 50B are connected to each other by the connecting member 63, the inflator 10 with the mounting bracket 11 already attached is inserted into the connection port portion 24 of the airbag 18, and the connection port is connected by the clamp 13. If the part 24 and the inflator 10 are connected, an airbag assembly AM can be formed as shown in FIG.

  And if each mounting bracket 11 and 36 of this airbag assembly AM is arrange | positioned in the predetermined position of the inner panel 2, and it fixes to the predetermined position of the inner panel 2 using the mounting bolts 12 and 46, The airbag assembly AM can be assembled to the vehicle V. Thereafter, lead wires (not shown) extending from the control device for operating the inflator are connected to the inflator 10, and the pillar garnishes 5, 7, 8 and the roof head lining 6 are attached to the inner panel 2 on the body 1 side. The protective airbag device M can be mounted on the vehicle V. And in the head protection airbag apparatus M of embodiment, since the synthetic resin protector 49 covers the circumference | surroundings of the folding completion body 34 formed by folding the airbag 18, the air before vehicle V mounting | wearing The airbag 18 can be protected from surrounding members when the bag assembly AM is transported or mounted on the vehicle.

  After the head protection airbag device M is mounted on the vehicle V, if the inflator 10 is operated and the inflation gas G is supplied to the airbag 18, the airbag 18 is connected to the gas supply path 23 and the plurality of cells 20a. The inflation gas G is caused to flow in, the airbag cover 16 is pushed open and expanded downward, and as shown by the two-dot chain line in FIG. 1, so as to cover the windows W1, W2 and the inner side of the intermediate pillar CP, Expansion will be completed.

  In the head protection airbag device M according to the embodiment, in the folding completion body 34 formed by folding the airbag 18, the attachment portion 28 with the attachment bracket 36 fixed in advance is used for inserting the protector 49. From the opening 53, the protector body 51 is protruded upward, the mounting bracket 36 is overlapped with the connecting portion 54 of the protector 49 on the vehicle outer side O, and the mounting bracket 36 is brought close to the connecting portion 54. The locking piece 60 as the locking edge formed on the connecting portion 54 is pushed by the locking claw 40 formed on the mounting bracket 36, and the tip 60a is moved to the vehicle interior side. The locking claw portion 40 is bent by the locking piece portion 60 so as to bend toward the inside and outside of the vehicle so that the mounting bracket 36 and the connecting portion 54 can be connected. See Figure 14, 15). That is, in the head protection airbag device M of the embodiment, the mounting bracket 36 and the connecting portion 54 can be connected without greatly moving the mounting bracket 36 with respect to the protector 49. Is easy compared to the conventional head protection airbag device, and the mounting bracket 36 can be fixed to the mounting portion 28 in advance. Can be attached to the folding completion body 34. Therefore, the protector 49 can be easily attached to the folding completion body 34 as compared with the conventional head protection airbag device.

  Therefore, in the head protection airbag device M of the embodiment, the protector 49 can be easily attached to the folding completion body 34.

  Further, in the head protection airbag device M of the embodiment, the protector 49 can be attached to the folding completion body 34 while suppressing the positional deviation when the attachment bracket 36 and the connection portion 54 are connected. Even if the protector 49 itself is not directly attached to the body 1 side of the vehicle V, the protector 49 can be mounted on the vehicle V while being prevented from being displaced with respect to the folding completion body 34. For this reason, the protector 49 can protect the airbag 18 by securing a state in which the airbag 18 can be projected from the projecting opening 51d configured to open downward until immediately before the operation. The airbag 18 can be inflated smoothly.

  Furthermore, in the head protection airbag device M of the embodiment, the locking claw portion 40 is formed on the mounting bracket 36, and the locking piece portion 60 as a locking edge is formed on the connecting portion 54. Therefore, compared with the case where the locking claw portion is formed in the connecting portion, the manufacture of the protector 49 made of synthetic resin is facilitated, and the locking claw portion 40 is made of sheet metal, so that the locking claw portion 40, the locking piece 60 can be locked firmly. Of course, if such a point is not considered, it is good also as a structure which forms a latching edge part in a mounting bracket and forms a latching claw part in a connection part. In the case of such a configuration, the locking claw portion is once bent to get over the locking edge portion, and the peripheral edge of the locking edge portion is locked.

  Furthermore, in the head protection airbag device M of the embodiment, the locking claw portion 40 and the locking piece portion 60 are formed on the front-rear direction side of the attachment portion 28. That is, in the head protection airbag device M of the embodiment, the mounting bracket 36 and the connecting portion 54 are connected on the direction side along the longitudinal direction of the long folding completion body 34, so When the folded complete body 34 in the accommodated state is transported before being mounted on the vehicle, the connection state between the mounting bracket 36 and the connection portion 54 is difficult to be released, and the connection state between the mounting bracket 36 and the connection portion 54 is difficult. Can be maintained stably. Of course, if such a point is not considered, it is good also as a structure which arrange | positions a latching claw part and a latching edge part in the position which becomes the upper side of an attachment part.

  In particular, in the head protection airbag device M of the embodiment, the locking claw portion 40 and the locking piece portion 60 are disposed on both the front and rear sides of the mounting portion 28, and the mounting bracket 36 and the connecting portion 54 are provided. Since the front and rear sides are connected, the mounting bracket 36 is difficult to move along the in-vehicle direction with respect to the connecting portion 54. Of course, if such a point is not taken into consideration, a locking claw portion and a locking piece portion are formed only on one of the front side and the rear side of the mounting portion, and on the other side, for example, a pin protruding in the vehicle interior / exit direction An insertion hole through which the pin can be inserted may be formed so as to suppress movement up and down and back and forth.

  Further, in the head protection airbag device M of the embodiment, the locking claw portion 40 is configured to separate the tip 42a side of the claw body 42 from each other, and the locking piece portion (locking edge portion) 60 is formed. The engaging edge portion is configured as a section shape extending in the front-rear direction toward the engaging claw portion 40 side. In other words, in the head protection airbag device M of the embodiment, in the locking piece portion 60, the region on the side of the original portion that is less bent is arranged at a position away from the locking claw portion 40, and the tip 60a side where the bending is large. This area is arranged on the locking claw 40 side. Therefore, if the mounting bracket 36 is moved toward the vehicle interior side I (the connecting portion 54 side) so as to be inserted between the engaging pieces 60, 60 in the connecting portion 54, the tip 60a of the engaging piece portion 60 is obtained. The side region can be easily bent toward the vehicle inner side I, and the connection workability between the mounting bracket 36 and the connecting portion 54 is further improved. Of course, if such a point is not considered, it is good also as a structure which a latching piece part extends in the direction side which cross | intersects with the axis | shaft of the nail | claw main body of a latching claw part. Further, the shape of the locking edge is not limited to that of the embodiment, and for example, a hole-like portion opened in the connecting portion so that the shaft portion of the locking claw portion can be inserted is used. It is good also as a structure so that the nail | claw main body of a latching claw part may be latched to a periphery.

  Further, in the head protection airbag device M of the embodiment, when the mounting bracket 36 is viewed from the vehicle inner side with the connecting portion 54 and the mounting bracket 36 being connected, The claw body 42 in the claw portion 40 is arranged so as to overlap. In the case of the embodiment, the claw body 42 arranged on the vehicle interior side I is arranged so as to cover the front end 60 a side of the locking piece portion 60. Therefore, the connection state between the connecting portion 54 and the mounting bracket 36 can be easily confirmed visually.

  Furthermore, in the head protection airbag device M of the embodiment, the locking piece portion 60 is configured as a substantially isosceles triangle shape in which the outer shape viewed from the inside and outside of the vehicle is narrowed toward the front end 60a side. Therefore, although the locking piece 60 is easily bent with the tip 60a side being narrow, the base side is wide and the bending rigidity can be secured. When this is done, the locking piece 60 can be bent by increasing the bending load. The locking piece 60 bent by increasing the bending load is restored with a large restoring force when restored away from the locking claw 40, and at the time of restoration, A sound can be generated at the moment when it comes into contact with the tip 42a of the nail body 42 again. For this reason, since the locking state between the locking claw portion 40 and the locking piece portion 60 can be confirmed by this sound, the connection portion 54 and the mounting bracket 36 can be used even when it is difficult to visually check the area of the locking claw portion 40. It is easier to check the connection state. The outer shape of the locking piece portion is not limited to a substantially isosceles triangle shape. For example, the outer shape viewed from the inside / outside direction of the vehicle is made narrower toward the front end side with the front end side being a substantially semicircular shape. You may use the shape. Of course, if such a point is not taken into consideration, a belt-like member having an outer shape viewed from the inside and outside of the vehicle and having a substantially uniform width dimension toward the front end may be used as the locking piece.

  In the head protection airbag device M of the embodiment, the locking claw portion 40 that is locked to the locking piece portion 60 is surrounded by the support frame 55 in the upper and lower and front and rear directions. The movement to the up-down direction side and the front-rear direction side that release the engagement with 60 is suppressed, and it is possible to prevent the release from the engagement piece portion 60 easily. Therefore, when the operator grips only the mounting bracket 36 and moves the airbag assembly AM during the mounting operation to the vehicle V, the locking pieces 60 and the locking claws 40 are locked. The state is not released and handling workability is good. And in the head protection airbag apparatus M of embodiment, since the latching piece part 60 is a structure which can bend in the vehicle inside / outside direction, the latching claw part 40 is latched with the latching piece part 60. When the mounting bracket 36 in a state of being pressed is strongly pressed toward the vehicle outer side O, the locking piece 60 is bent so that the tip 60a faces the vehicle outside, and the tip 60a of the locking piece 60 and the inner wall 58 are bent. The claw body 42 of the locking claw portion 40 is inserted through the gap between the locking claw portion 40 and the locking claw portion 60 and the locking piece portion 60 can be released from the locked state.

  In the embodiment, at the time of connecting the mounting bracket and the connecting portion, the mounting portion 28 to which the mounting bracket 36 is fixed is arranged on the vehicle outer side O of the connecting portion 54, and the mounting bracket 36 is moved toward the vehicle inner side I. The locking claw portion 40 and the locking piece portion 60 are locked to each other, but the mounting bracket and the connecting portion are disposed in the vehicle interior and exterior directions so that the mounting bracket is attached to the vehicle. It is good also as a structure which makes it move to the vehicle outer side toward the connection part located outside, locks a latching claw part and a locking piece part, and connects a mounting bracket and a connection part. Further, in the embodiment, as the mounting bracket, the two-plate configuration of the inner plate and the outer plate is used so as to sandwich the mounting portion, but if the configuration can be fixed to the mounting portion, You may use the attachment bracket of a structure which consists only of an inner side plate which covers a vehicle inner side.

  Further, in the embodiment, the airbag 18 mounted on the two-row seat type vehicle that covers the sides of the front seat and the rear seat is placed in the protector 49 that is divided into the front part 50F and the rear part 50B. Although being housed, the present invention may be applied to a head protecting airbag device mounted on a three-row seat type vehicle. When used in such an airbag device, the protector is divided into three parts. It is good.

  Furthermore, in the embodiment, the airbag 18 is folded by bellows folding, but the folded shape of the airbag is not limited to this, and the lower edge is brought closer to the upper edge side from a flatly deployed state. The airbag may be folded by roll folding that winds around the outside of the vehicle.

  In the embodiment, the inflator 10 is disposed in the region of the rear pillar portion RP on the rear end side of the airbag 18. However, the position of the inflator is not limited to this, and the inflator is installed in the airbag. It is good also as a structure arrange | positioned in the area | region of the front pillar part used as the front-end side, and the area | region above the center pillar part which is the middle vicinity before and behind an airbag.

1 ... Body
2 ... Inner panel,
10 ... Inflator,
18 ... Airbag,
18a ... upper edge,
28 ... Mounting part,
28a ... insertion hole,
34 ... Folded body,
36 ... Mounting bracket,
36a ... crimping part,
37 ... Inner plate,
37a ... Mounting hole,
40: locking claw,
41 ... shaft part,
42 ... nail body,
44 ... outer plate,
44a ... mounting holes,
46: Mounting bolt (mounting means),
49 ... Protector,
51 ... Protector body,
52 ... opening for insertion,
60 ... locking piece (locking edge),
AM ... Airbag assembly,
V ... Vehicle,
W1, W2 ... windows,
M: Head protection airbag device.

Claims (6)

An airbag that covers the inside of the vehicle window when deployed and inflated, and a protector made of synthetic resin that covers the periphery of the long folded body formed by folding the airbag,
As a configuration in which the airbag is attached to the body side of the vehicle on the upper edge side of the window, using an attachment bracket made of a substantially flat sheet metal, the mounting portion disposed on the upper edge side when the inflation is completed,
The protector comprises: a protector main body that covers the periphery of the folding completed body; and a connecting portion that is formed so as to protrude from the protector main body and is disposed in the vicinity of the attaching portion. A head protection airbag device configured to be mounted on a vehicle attached to the body side in a state integrated with the folding completed body by being connected to a bracket,
The mounting bracket is fixed to the mounting portion, and is provided with a mounting hole through which a mounting means for mounting the mounting portion on the body side can be inserted substantially at the center.
In the vicinity of the connecting portion of the protector body, the mounting bracket fixed to the mounting portion can be inserted together with the mounting portion, and an insertion opening penetrating the inner and outer periphery of the protector body is formed.
In a region around the mounting portion in the mounting bracket and the connecting portion, one of the mounting bracket and the connecting portion has a shaft portion extending in the vehicle interior / exit direction, and intersects the shaft portion from the front end side of the shaft portion. And a claw body configured to extend so as to be formed, and on the other side, formed so as to be along the opening surface of the mounting hole and locked to the locking claw portion. A locking edge is formed,
The mounting bracket fixed to the mounting portion is protruded above the protector main body through the insertion opening, and is overlapped with the connecting portion in the vehicle interior / exit direction. The head is configured to be connected to the connecting portion by locking the locking claw portion to the locking edge portion while bending at least one of the claw portion or the locking edge portion. Part protection airbag device. The locking claw is formed on the mounting bracket,
The head protection airbag device according to claim 1, wherein the locking edge portion is formed in the connecting portion.   The head protection airbag device according to claim 1 or 2, wherein the locking claw portion and the locking edge portion are formed on at least one of the front and rear sides of the attachment portion.   The head protection airbag device according to claim 3, wherein the locking claw portion and the locking edge portion are formed on both front and rear sides of the attachment portion. The locking edge portion is formed in the connecting portion and is configured as a section shape extending toward the locking claw portion side along the front-rear direction,
The claw body in the locking claw portion is configured so as to be spaced apart from each other at the front end side, and overlaps the locking edge portion in the vehicle interior and exterior direction when the mounting bracket and the connection portion are connected. The head protection airbag device according to claim 4, wherein the head protection airbag device is disposed on the head protection airbag device.   The head protection airbag device according to claim 5, wherein the locking edge portion is configured such that an outer shape viewed from the inside / outside direction of the vehicle has a narrow width toward a front end side.

Images