JP7028673B2 - Deployment guide member for curtain airbags - Google Patents

Description

The present invention relates to a guide member that assists the deployment of a curtain airbag in a vehicle interior.

The curtain airbag is installed on the roof side of the vehicle and expands and expands like a curtain in the vehicle interior in the event of a side collision of the vehicle to cover the door and protect the occupants. In order to deploy the curtain airbag in the passenger compartment, a jump stand is provided above the pillar trim body as a guide member. The jumping platform guides the inflated and pressed curtain airbag toward the passenger compartment. While the jumping platform is required to be strong enough to withstand the deployed load of the curtain airbag, it is also required to be vulnerable to the impact load from the room in order to protect the occupants.

The jump table disclosed in Patent Document 1 below includes an inclined plate portion that guides an inflatable curtain airbag toward the vehicle interior, and a fixed plate portion that is located above the inclined plate portion and is fixed to a vehicle body panel. , Are integrated. The fixing plate portion faces the vehicle body panel and supports a locking member that is locked to the vehicle body panel.

A groove is formed on the lower surface of the inclined plate portion and extends in the vehicle length direction. Below the inclined plate portion, a cushioning material having a protrusion extending in the vehicle length direction is provided on the upper surface, and is joined to the pillar trim main body on the vehicle interior side. The lower end of the roof trim is engaged with the upper end of the pillar trim body, and the roof trim covers the jump stand and the curtain airbag.

Regarding the jump stand of Patent Document 1, the relaxation of the impact load when the occupant in the vehicle interior is hit against the interior member such as the pillar trim body and the roof trim in the case of a slight vehicle collision in which the curtain airbag is not deployed will be described. ..
When an impact load is applied to the interior member, the cushioning material on the outside of the vehicle is crushed and the upper surface thereof is deformed so as to be raised. Further, the inclined plate portion of the jump table is deformed so that the upper surface of the inclined plate portion is raised from the groove portion as a starting point. At this time, the protrusion of the cushioning material whose upper surface is raised abuts on the groove of the inclined plate portion to promote the deformation of the inclined plate portion. Due to the deformation of the inclined plate portion in this way, the impact load due to the impact of the occupant is alleviated in the jump table of Patent Document 1.

Japanese Unexamined Patent Publication No. 2011-5964 (FIGS. 6 and 7)

In the jump table of Patent Document 1, a cushioning material is also used to alleviate the impact load from the vehicle interior, and this cushioning material is used not only to alleviate the impact load but also to promote the deformation of the inclined plate portion. As the number of parts increased, the structure became complicated, and the manufacturing cost increased. Further, since the groove portion that is the starting point of deformation is formed on the lower surface of the inclined plate portion, it is difficult to secure the strength that can withstand the unfolding load of the expanding curtain airbag.

The present invention has been made to solve the above problems, and is a tilted top plate portion that guides an inflatable curtain airbag toward the passenger compartment, and is located below the top plate portion and is fixed to a vehicle body panel. In the deployment guide member of the curtain airbag that integrally has the fixing portion, a plurality of downward reinforcing ribs are connected to the lower surface of the top plate portion, and the fixing portion faces the vehicle body panel and the vehicle body is formed. It has a support plate portion that supports the locking portion that is locked to the panel, and side plate portions that extend from both sides of the support plate portion in the vehicle length direction toward the vehicle interior, and each side plate portion of the fixing portion. A groove is formed between the above-mentioned reinforcing rib and the reinforcing rib arranged above the reinforcement rib when viewed from the vehicle length direction.

According to the above configuration, since a groove is formed between the side plate portion of the fixed portion and the reinforcing rib arranged above the groove, the rigidity of the deployment guide member can be weakened, and the occupant can be hit in the event of a vehicle collision. Therefore, the impact load applied to the deployment guide member can be relaxed. Therefore, the safety of the occupants can be improved.
Further, since there are a plurality of reinforcing ribs provided on the lower surface of the top plate portion, the deployment guide member can secure the strength to withstand the deployment load of the curtain airbag.
Further, since the number of parts is small and the structure is simple, the manufacturing cost can be reduced.

Preferably, the top plate portions are provided in pairs so as to be spaced apart from each other in the vehicle length direction, and the fixing portions are located below the gap between the pair of top plate portions, and at least both sides of each top plate portion in the vehicle length direction. In addition, the reinforcing ribs are provided, and among these reinforcing ribs, the groove is formed between the reinforcing ribs on the gap side and the side plate portion of the fixing portion.

Preferably, the groove has a V shape that is convex from the outside of the vehicle in the vehicle width direction toward the vehicle interior side.
According to the above configuration, when an impact load is applied to the deployment guide member from the passenger compartment side to the outside of the vehicle, the deployment guide member is deformed or damaged up and down starting from the V-shaped groove to alleviate the impact load. be able to.

According to the present invention, there is provided a deployment guide member for a curtain airbag that has both the strength to withstand the deployment load of the curtain airbag and the vulnerability to the impact load from the room for occupant protection. It can be provided at a low manufacturing cost due to a simple structure with a small number of parts.

It is a perspective view of the left seat side pillar trim provided with the jump stand (deployment guide member) which concerns on one Embodiment of this invention, as seen from the vehicle interior side. It is an enlarged perspective view of a main part of the pillar trim as seen from the outside of the car. It is an enlarged perspective view of a main part seen from the outside of the vehicle by disassembling the pillar trim into a jump stand and a pillar trim body. It is sectional drawing which follows the IV-IV line of FIG.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
The pillar trim 1 shown in FIGS. 1 to 4 is on the left seat side, and is provided on the passenger compartment side of the pillar panel 2 (vehicle body panel) of the vehicle as shown in FIG. A curtain airbag 4 is deployably provided above the roof lining 3 above the pillar trim 1.

As shown in FIGS. 1 to 3, the pillar trim 1 is attached to the pillar trim main body 10 and the upper end portion of the pillar trim main body 10, and guides the inflatable curtain airbag 4 toward the passenger compartment 20 (deployment guide). It is equipped with a member).

The pillar trim main body 10 is formed by injection molding a resin such as polypropylene. The pillar trim main body 10 extends in the vertical direction along the pillar panel 2 and has a U-shape having a cross section convex on the passenger compartment side.

As shown in FIG. 3, a pair of pedestal assembling portions 12 and 12 for assembling the jump pedestal 20 are provided on both sides of the upper end portion of the back surface (the surface on the outer side of the vehicle) of the pillar trim main body 10. A first fitting convex portion 14 having an L-shaped cross section is formed at the upper end portion of the pedestal assembly portion 12. A cross-shaped second fitting convex portion 16 is formed in the central portion of the pedestal assembly portion 12, and a cylindrical third fitting convex portion 18 is formed below the cross-shaped second fitting convex portion 16. A screw screw hole 18a is formed in the third fitting convex portion 18.

In this embodiment, the jump table 20 is separate from the pillar trim main body 10, and is configured by injection molding a resin such as polypropylene, for example. The jump table 20 integrally has an upper airbag support portion 20A and a lower connecting portion 20B.

As shown in FIG. 3, in this embodiment, a pair of airbag support portions 20A are provided side by side in the vehicle length direction, and the pair of airbag support portions 20A and 20A are separated by a gap G.
Each airbag support portion 20A integrally has a top plate portion 21 and an intermediate support plate portion 22. The top plate portion 21 is inclined downward from the upper end thereof toward the vehicle interior side (left side in FIG. 4) in the vehicle width direction. An intermediate support plate portion 22 is connected to the lower end portion of the top plate portion 21 and extends downward.

A plurality of reinforcing ribs 23, 24, and 25 are provided on the lower surface of the top plate portion 21 (the surface facing the outside of the vehicle). The reinforcing ribs 23, 24, and 25 extend vertically, respectively, and extend from the top plate portion 21 to the intermediate support plate portion 22. In this embodiment, the top plate portion 21 on the front side in the vehicle length direction is provided with reinforcing ribs 23, 25 on both side edges in the vehicle length direction, and two reinforcing ribs 24, 24 are provided in the middle portion in the vehicle length direction. Has been done. The top plate portion 21 on the rear side in the vehicle length direction is provided with reinforcing ribs 23 and 25 on both side edges in the vehicle length direction, and one reinforcing rib 24 is provided in the middle portion in the vehicle length direction.

The reinforcing ribs 25 and 25 adjacent to the gap G include an inclined plate portion 25a extending downward from the lower end portion of the top plate portion 21 to the outside of the vehicle in the vehicle width direction and an end of the inclined plate portion 25a on the outside of the vehicle. A hanging plate portion 25b that hangs down from the portion is provided. A flat plate portion 25c is provided at the ends of the inclined plate portion 25a and the hanging plate portion 25b on the side opposite to the gap G in the vehicle length direction.

The connecting portion 20B is for connecting the jump stand 20 to the pillar trim main body 10 and the pillar panel 2, and has a shelf plate portion 31 and a main plate portion 32. The shelf plate portion 31 extends substantially horizontally from the lower end portion of the intermediate support plate portion 22 to the outside of the vehicle in the vehicle width direction. The main plate portion 32 extends substantially vertically downward from the vehicle outer edge of the shelf plate portion 31. The lower ends of the intermediate support plate 22, the reinforcing ribs 23, 24, and the flat plate portion 25c are integrally connected to the upper surface of the shelf plate portion 31.

A clip seat 40 (fixed portion) is provided at the center of the main plate portion 32 in the vehicle length direction. As shown in FIG. 3, the clip seat 40 projects outward from the main plate portion 32 in the vehicle width direction and extends vertically. The clip seat 40 has a support plate portion 41 and a pair of side plate portions 42, 42 integrally, and has a U-shaped cross section.

The pair of side plate portions 42, 42 face each other apart from each other in the width direction (direction along the vehicle length direction) of the jump table 20, and project from the main plate portion 32 to the outside of the vehicle in the vehicle width direction. Each side plate portion 42 is formed to be relatively thin, and its cross section is bent in a stepped shape. The support plate portion 41 is bridged between the ends of the pair of side plate portions 42, 42 on the outer side of the vehicle.

The lower end of the reinforcing rib 25 on the gap G side is connected to the upper end of each side plate 42 and the vehicle interior side in the vehicle width direction. Further, a reinforcing plate portion 42a connecting the side plate portion 42 and the hanging plate portion 25b is provided with the plate surface facing in the vertical direction.

The assembly structure of the jump table 20 and the pillar trim main body 10 will be described.
As shown in FIG. 3, the shelf plate portion 31 of the jump table 20 is formed with an L-shaped first fitting hole 31a, and the shelf plate portion 31 on the front side in the vehicle length direction has reinforcing ribs 24 and 24. It is arranged between the reinforcing ribs 23 and 24 in the rear shelf plate portion 31. In the main plate portion 32 of the jump table 20, a second fitting hole 32b forming a quadrangle and a third fitting hole 32c forming a circle are formed on both sides of the clip seat 40 so as to be vertically separated from each other.

As shown in FIG. 2, the shelf plate portion 31 and the main plate portion 32 of the jump table 20 are covered with the upper end portion of the platform assembly portion 12 of the pillar trim main body 10 and the outer surface of the vehicle, respectively. In this state, the first fitting convex portion 14, the second fitting convex portion 16, and the third fitting convex portion 18 of the pillar trim main body 10 have the first fitting hole 31a and the second fitting, respectively, of the jump stand 20. It is fitted into the hole 32b and the third fitting hole 32c. A tapping screw 50 screwed in while forming a female screw is attached to the screw screw hole 18a of the third fitting convex portion 18, and the jump base 20 is fixed to the pillar trim main body 10. In this way, the pillar trim 1 is configured.

Next, the mounting structure of the pillar trim 1 to the pillar panel 2 will be described. The pillar trim 1 is attached to the pillar panel 2 by fixing the jump base 20 to the pillar panel 2 by a clip 60 (locking portion).

As shown in FIG. 3, a clip mounting hole 41a is formed in the support plate portion 41 of the clip seat 40 of the jump table 20, and an engaging convex portion 41b and a load receiving portion 41c are provided above and below the clip mounting hole 41a, respectively. The engaging convex portion 41b is U-shaped and protrudes to the outside of the vehicle in the vehicle width direction. The load receiving portion 41c is arranged at the lower end of the support plate portion 33, projects outward in the vehicle width direction, and extends in the vehicle length direction.

The clip 60 shown in FIGS. 2 and 4 is made of an elastic material such as resin and has a mounting portion 61 and a locking portion 62. The mounting portion 61 is held in the clip mounting hole 41a. At this time, as shown in FIG. 4, the locking portion 62 projects from the clip seat 40 to the outside of the vehicle in the vehicle width direction.

The locking portion 62 is locked in the clip locking hole 2a of the pillar panel 2, and the engaging convex portion 41b is inserted into the engaging hole 2b formed directly above the clip locking hole 2a to jump. The base 20 is attached to the pillar panel 2, and the pillar trim 1 is attached to the pillar panel 2.

Next, the development of the curtain airbag 4 will be described.
As shown in FIG. 4, the curtain airbag 4 is supported so as to be placed on the top plate portion 21 of the jump table 20. When expansion gas is introduced into the curtain airbag 4 at the time of a vehicle collision, the curtain airbag 4 hits the top plate portion 21 and is guided toward the passenger compartment side, pushes the roof lining 3 open, and has a curtain shape in the passenger compartment. Expand to.

When the curtain airbag 4 is deployed, the deployment load F1 of the curtain airbag 4 is applied to the top plate portion 21. The unfolded load F1 is mainly transmitted to the clip 60 of the clip seat 40 via the reinforcing ribs 25 and 25 on the shortest load transmission path from the top plate portion 21 to the clip seat 40, and is received by the pillar panel 2.

Since a plurality of reinforcing ribs 23, 24, and 25 are provided on the lower surface of the top plate portion 21, the top plate portion 21 can secure the strength that can withstand the unfolding load F1 of the curtain airbag 4. As a result, the jump table 20 can secure the strength that can withstand the unfolding load F1 of the curtain airbag 4.

At the time of this deployment, the engaging convex portions 41b and the load receiving portions 41c on the upper and lower sides of the clip 60 abut on the engaging holes 2b and the pillar panel 2 of the pillar panel 2, respectively, and the load from the curtain airbag 4 is applied to the pillars. It is handed over to panel 2.

The jump table 20 is required to have strength to withstand the unfolding load F1 of the curtain airbag 4, and in order to protect the occupants in the event of a light vehicle collision in which the curtain airbag 4 does not unfold, the impact load F2 from the room is required. Vulnerability to is also required. Therefore, in order to secure the vulnerability, the jump table 20 is formed with a groove 70 on the outer side of the vehicle in the vehicle width direction.

The groove 70 is arranged between the side plate portion 42 of the clip seat 40 and the reinforcing rib 25 on the gap G side connected above the side plate portion 42. The groove 70 is cut out in a V shape that is convex from the outside of the vehicle in the vehicle width direction toward the vehicle interior side. The groove 70 is located above the reinforcing plate portion 42a, and the deepest portion 71 of the groove 70 reaches near the vehicle outer surface of the hanging plate portion 25b. As shown in FIG. 4, the deepest portion 71 is located outside the vehicle in the vehicle width direction with respect to the mounting position of the curtain airbag 4 on the top plate portion 21.

The case where the occupant is hit against the pillar trim main body 10 and the roof trim 3 at the time of a slight vehicle collision in which the curtain airbag 4 is not deployed will be described.
When the impact load F2 from the vehicle interior is applied to the jump table 20 via the pillar trim main body 10 and the roof trim 3, the jump table 20 is triggered by the V-shaped groove 70 as shown by the arrow A in FIG. It deforms or breaks up and down so that the 70 opens. As a result, the load from the vehicle interior can be relaxed.

Since the groove 70 is formed on the outer side of the vehicle in the vehicle width direction from the curtain airbag 4 on the top plate portion 21, it does not significantly affect the strength that can withstand the unfolding load F1 of the curtain airbag 4 required for the jump table 20. Do not give.
Therefore, in the jump table 20 of this embodiment, it is possible to secure the strength to withstand the deployed load F1 of the curtain airbag 4 and to secure the vulnerability to the impact load F2 from the room for the protection of the occupants. .. Further, unlike the conventional technique having a large number of parts, the jump stand 20 can be provided with a small number of parts and a simple structure at a low manufacturing cost.

The present invention is not limited to the above embodiment, and various modifications can be adopted without departing from the gist thereof.
In the above embodiment, a pair of airbag support portions 20A of the jump table 20 are provided, but one or three or more may be provided. In that case, for example, a groove may be formed between each side plate portion 42 of the clip seat 40 and the reinforcing rib arranged above the side plate portion 42.
The groove 70 is not limited to the V-shape and may have any other shape.
In the above embodiment, the groove 70 is formed in the lower part of the reinforcing rib 25 on the gap G side, but it may be formed in other reinforcing ribs.
The clip seat 40 and the clip 60 may be provided integrally.
In the above embodiment, the jump table 20 is locked to the pillar panel 2 by using the clip 60 as the locking portion, but bolts and nuts, locking claws and the like may be used as the locking portion.
The jump stand 20 and the pillar trim main body 10 may be provided integrally.

INDUSTRIAL APPLICABILITY The present invention can be applied to a guide member that assists the deployment of a curtain airbag in a vehicle interior.

2 Pillar panel (body panel)
4 Curtain airbag 20 Jump stand (deployment guide member for curtain airbag)
21 Top plate 23, 24, 25 Reinforcing rib 40 Clip seat (fixed part)
41 Support plate part 42 Side plate part 60 Clip (locking part)
70 groove G gap

Claims (2)

Deployment of curtain airbags that integrally has an inclined top plate that guides the inflatable curtain airbag toward the passenger compartment, and a fixed portion that is located below this top plate and is fixed to the vehicle body panel. In the guide member
The top plate portions are provided in pairs separated from each other in the vehicle length direction, and the fixing portion is located below the gap between the pair of top plate portions.
On the lower surface of each top plate, a plurality of downward reinforcing ribs are connected at least on both sides of each top plate in the vehicle length direction .
The fixing portion comprises a support plate portion that faces the vehicle body panel and supports a locking portion that is locked to the vehicle body panel, and side plate portions that extend from both sides of the support plate portion in the vehicle length direction toward the vehicle interior. Have and
Between each side plate portion of the fixing portion and the reinforcing rib on the gap side of the plurality of reinforcing ribs arranged above the fixed portion, the vehicle interior side is from the outside of the vehicle width direction when viewed from the vehicle length direction. A deployment guide member for a curtain airbag, characterized in that a V-shaped groove that is convex toward the surface is formed. Deployment of curtain airbags that integrally has an inclined top plate that guides the inflatable curtain airbag toward the passenger compartment, and a fixed portion that is located below this top plate and is fixed to the vehicle body panel. In the guide member
A plurality of downward reinforcing ribs are connected to the lower surface of the top plate portion.
The fixing portion comprises a support plate portion that faces the vehicle body panel and supports a locking portion that is locked to the vehicle body panel, and side plate portions that extend from both sides of the support plate portion in the vehicle length direction toward the vehicle interior. Have and
A groove notched from the outside of the vehicle width direction to the vehicle interior side when viewed from the vehicle length direction is formed between each side plate portion of the fixing portion and the reinforcing rib arranged above the side plate portion. ,
A deployment guide member for a curtain airbag, characterized in that the deepest portion of the groove is located outside the vehicle in the vehicle width direction with respect to the mounting position of the curtain airbag on the top plate portion.

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