JP7033465B2 - 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 as a guide member. The inflatable curtain airbag is abutted against the jump table, and the curtain airbag is guided to the passenger compartment side.

The jump table disclosed in Patent Document 1 below has an inclined portion that inclines diagonally downward toward the vehicle interior and guides an inflating curtain airbag toward the vehicle interior, and is located above the back side of the inclined portion. The locking claws are fitted into the locking holes of the vehicle body panel to be attached to the vehicle body panel.

A protrusion is formed on the jump table at a position below the locking claw and displaced in the width direction (vehicle length direction) of the jump table. The protrusion is inserted into the insertion hole of the vehicle body panel with a gap. Further, the jump table is formed with a protrusion protruding toward the vehicle body panel between the locking claw and the protrusion in the vertical direction and at a position deviated from the locking claw and the protrusion in the width direction. ing.

When expansion gas is introduced into the curtain airbag, the load of the expanding curtain airbag is applied to the inclined part of the jumping platform, the lower part of the jumping platform approaches the vehicle body panel with the locking claw as a fulcrum, and the jumping platform becomes a car. Trying to fall to the room side. At this time, the protrusion hits the vehicle body panel and the protrusion hits the insertion hole to disperse the load from the curtain airbag and prevent the jumping platform from collapsing toward the vehicle interior side.

Japanese Patent No. 581146

In the jump table of Patent Document 1, the load from the curtain airbag is dispersed by abutting the protrusions and protrusions on the vehicle body panel. However, the jump table of Patent Document 1 has a structure in which the lower part of the jump table is elastically deformed toward the vehicle body panel side with the locking claw as a fulcrum by the amount of the gap between the protrusion and the insertion hole when the curtain airbag is deployed. Excessive load was concentrated on the claws, and the fall of the jumping platform was not sufficiently suppressed.

Further, since the locking claws, the protrusions, and the protrusions are provided so as to be offset from each other in the width direction of the jump table, the load concentrated on the locking claws is not sufficiently dispersed. Therefore, when the jumping platform is about to fall down, the locking claws may be damaged, or the locking claws may come out of the locking hole of the vehicle body panel and the jumping platform may fall off from the vehicle body panel. ..

The present invention has been made to solve the above-mentioned problems, and is a guide portion that guides an inflatable curtain airbag that inclines diagonally downward toward the passenger compartment toward the passenger compartment and a position below the guide portion. In the deployment guide member of the curtain airbag, which has an integral mounting base portion and is provided with a mounting portion to be mounted on the vehicle body panel, the mounting base portion is above the mounting portion. An engaging convex portion to be inserted into the engaging hole of the vehicle body panel is formed, and a load receiving portion protruding toward the vehicle body panel is formed below the mounting portion, and the mounting portion is the mounting portion. In the state of being provided on the pedestal portion, the engaging convex portion, the mounting portion, and the load receiving portion are arranged in a straight line in order from the top.

According to the above configuration, when the curtain airbag is deployed, the load received from the expanding curtain airbag to the guide portion of the deployment guide member is distributed to the engaging convex portion and the mounting portion. As a result, the load applied to the mounting portion is reduced, and the force in the direction in which the mounting portion comes out of the vehicle body panel is reduced. At this time, even if the deployment guide member tries to collapse toward the vehicle interior side, the fulcrum of the collapse is also dispersed between the engaging convex portion and the mounting portion, so that the amount of displacement of the lower portion of the deployment guide member toward the vehicle body panel side decreases. ..
The load receiving portion arranged below the mounting portion abuts on the vehicle body panel, and the load from the curtain airbag is further dispersed, so that the load applied to the mounting portion is further reduced. The load from the curtain airbag is efficiently distributed by the linear arrangement of the engaging protrusion, the mounting portion and the load receiving portion.
The abutment of the load receiving portion against the vehicle body panel limits the movement of the lower part of the deployment guide member to the vehicle body panel side, and suppresses the collapse of the deployment guide member. Therefore, it is possible to prevent the mounting portion from coming off the vehicle body panel and the deployment guide member from falling off the vehicle body panel.

Preferably, the mounting portion is a clip that is fitted into a fitting hole of the vehicle body panel, and the clip is inserted and fixed in the mounting pedestal portion between the engaging convex portion and the load receiving portion. A clip mounting hole is formed.
According to the above configuration, the clip is inserted and fixed in the clip mounting hole, so that the clip is positioned between the engaging convex portion and the load receiving portion. That is, the load from above derived from the curtain airbag applied to the clip is distributed to the engaging convex portions and the load receiving portions on the upper and lower sides of the clip. Therefore, it is possible to prevent the clip from coming off the vehicle body panel or being damaged, and by extension, it is possible to prevent the deployment guide member from falling off from the vehicle body panel.

According to the present invention, it is possible to provide a deployment guide member for a curtain airbag that is prevented from falling off from a vehicle body panel.

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 the main part seen from the outside of the car by disassembling the pillar trim. 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 trim side assembling portions 12 and 12 for assembling the jump stand 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 trim side assembly portion 12. A cross-shaped second fitting convex portion 16 is formed in the central portion of the trim side 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.

As shown in FIG. 3, the jump table 20 integrally has a pair of upper airbag support portions 20A and 20A and a lower connecting portion 20B.

Each airbag support portion 20A integrally has a guide wall 21 (guide portion) and an intermediate support wall 22. The guide wall 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 wall 22 is connected to the lower end of the guide wall 21. The intermediate support wall 22 extends downward from the guide wall 21.

As shown in FIG. 3, a plurality of reinforcing ribs 23 are provided on the back surfaces (the surface facing the outside of the vehicle) of the guide wall 21 and the intermediate support wall 22. The reinforcing rib 23 extends vertically and extends from the guide wall 21 to the intermediate support wall 22.

A pair of side walls 24 and 25 extend downward from both side edges of the guide wall 21 in the vehicle length direction. On the side wall 25 on the side of the adjacent airbag support portion 20A, an inclined wall 25a extending downward from the lower end of the guide wall 21 to the outside of the vehicle in the vehicle width direction and hanging downward from the end of the inclined wall 25a on the outside of the vehicle. A hanging wall 25b is provided. A flat wall 25c is provided at the end of the inclined wall 25a and the hanging wall 25b on the side of the adjacent reinforcing rib 23 in the vehicle length direction.

The connecting portion 20B has a clip seat 30 (mounting pedestal portion) arranged in the center in the vehicle length direction and a pair of pedestal side assembly portions 40, 40 arranged on both sides thereof (both sides in the vehicle length direction). is doing. The pedestal side assembly portions 40 and 40 are used for assembling the jump table 20 to the pillar trim body 10, and the clip seat 30 is used to attach the pillar trim 1 composed of the jump table 20 and the pillar trim body 10 to the pillar panel 2. Used for.

Each stand-side assembly portion 40 has a shelf wall 41 that is substantially horizontal, and a main wall 42 that extends downward from the outer edge of the shelf wall 41 substantially vertically. On the upper surface of the shelf wall 41, the lower ends of the intermediate support wall 22, the reinforcing rib 23, the side wall 24, and the flat wall 25c in the airbag support portion 20A are integrally connected. The shelf wall 41 is formed with an L-shaped first fitting hole 41a. A quadrangular second fitting hole 42b is formed in the main wall 42, and a circular third fitting hole 42c is formed below the second fitting hole 42b.

The assembly of the jump stand 20 to the pillar trim main body 10 will be described.
As shown in FIG. 2, the shelf wall 41 and the main wall 42 of the jump table 20 are overlapped with the upper end portion of the back surface of the pillar trim main body 10. The shelf wall 41 covers the upper end portion of the trim side assembly portion 12 shown in FIG. 3, and the main wall 42 covers the vehicle outer surface of the trim side assembly portion 12. In this state, the first fitting convex portion 14 is fitted into the first fitting hole 41a, and the second fitting convex portion 16 is fitted into the second fitting hole 42b. Further, the third fitting convex portion 18 is fitted into the third fitting hole 42c, and the tapping screw 50 is screwed into the screw screw hole 18a while forming a female screw. In this way, the jump stand 20 is assembled to the pillar trim main body 10.

As shown in FIG. 3, the clip seat 30 projects from the base side assembly portions 40, 40 in the vehicle outer direction (vehicle outer side in the vehicle width direction). The clip seat 30 has a seat plate portion 31 and a pair of side plate portions 32, 32 integrally, and has a U-shaped cross section.

The pair of side plate portions 32, 32 face each other apart from each other in the width direction of the jump table (direction along the vehicle length direction) and project from the main wall 42 to the outside of the vehicle in the vehicle width direction. Each side plate portion 32 is formed to be relatively thin, and its cross section is bent in a stepped shape. The seat plate portion 31 is bridged between the ends of the pair of side plate portions 32, 32 on the outer side of the vehicle. At the upper end of each side plate portion 32, a reinforcing plate 32a connecting the side plate portion 32 and the hanging wall 25b of the airbag support portion 20A is provided with the plate surface facing up and down.

A clip mounting hole 33 is formed in the seat plate portion 31 of the clip seat 30, and an engaging convex portion 34 and a load receiving portion 35 are provided above and below the clip mounting hole 33, respectively. The engaging convex portion 34, the clip mounting hole 33, and the load receiving portion 35 are arranged in a straight line in order from the top.

The clip mounting hole 33 includes a holding hole portion 33a and a guide opening portion 33b. The holding hole portion 33a is formed in a circular shape and is arranged in the central portion of the seat plate portion 31. The guide opening 33b extends from the holding hole 33a toward one side (left side in FIG. 3) in the vehicle length direction while widening, and reaches the one side plate portion 32.

The engaging convex portion 34 has a pair of side wall portions 34a and 34a and a bottom wall portion 34b, and has a U-shape, and protrudes from the seat plate portion 31 to the outside of the vehicle in the vehicle width direction. The pair of side wall portions 34a, 34a face each other in the vehicle length direction (left and right in FIG. 3), and the lower end portions of these side wall portions 34a, 34a are connected to each other by the bottom wall portion 34b. The holding hole 33a of the clip mounting hole 33 is located directly below the bottom wall 34b.

The load receiving portion 35 is directly below the holding hole portion 33a, is arranged at the lower end of the seat plate portion 33, protrudes from the seat plate portion 33 to the outside of the vehicle in the vehicle width direction, and extends in the vehicle length direction. The rear end 35a of the load receiving portion 35 in the vehicle length direction extends to the position of the side plate portion 32, and the front end portion 35b is located slightly from the center of the seat plate portion 33 in the vehicle length direction. be. As shown in FIG. 4, the load receiving portion 35 has a slightly rounded tip in the vehicle width direction and has a U-shaped cross section. The tip of the load receiving portion 35 is slightly separated from the vehicle body panel 2.

Next, a structure for attaching the pillar trim 1 having the pillar trim main body 10 and the jump stand 20 to the pillar panel 2 will be described.
As shown in FIG. 4, the pillar trim 1 is attached to the vehicle body by attaching the jump stand 20 to the pillar panel 2 by the clip 60. The clip 60 is made of an elastic material such as resin, and has a locking portion 61 and a mounting portion 62. The mounting portion 62 is inserted through the guide opening 33b of the clip mounting hole and is held in the holding hole portion 33a as shown in FIGS. 2 and 4. As a result, the clip 60 is attached to the jump stand 20 and eventually to the pillar trim 1. At this time, as shown in FIG. 4, the locking portion 61 projects from the clip seat 30 to the outside of the vehicle in the vehicle width direction. The locking portion 61 is locked in the clip locking hole 2a of the pillar panel 2.
An engagement hole 2b is formed directly above the clip locking hole 2a in the pillar panel 2. The engaging protrusion 34 is inserted into the engaging hole 2b.

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 guide wall 21 of the jump table 20. When the expansion gas is introduced into the curtain airbag 4 at the time of a vehicle collision, the curtain airbag 4 is guided by the guide wall 21, expands toward the vehicle interior side, pushes the roof lining 3 open, and the curtain is inside the vehicle interior. Unfold in a shape.

When the curtain airbag 4 is deployed, the deployment load F of the curtain airbag 4 is applied to the guide wall 21. The unfolded load F is mainly transmitted to the clip 60 of the clip seat 30 through the lower part of the side wall 25 on the shortest load transmission path from the guide wall 21 to the clip seat 30 of the connecting portion 20B, and is received by the pillar panel 2. ..

At this time, with the contact point of the clip 60 with the pillar panel 2 as a fulcrum, as shown by the arrow A in FIG. 4, the lower portion of the jump table 20 approaches the pillar panel 2, and the jump table 20 tries to fall toward the passenger compartment side. , A force acts on the clip 60 in the direction of coming out of the clip locking hole 2a of the pillar panel 2. At this time, in the engaging convex portion 34 directly above the clip 60, the bottom plate portion 34b abuts on the lower portion of the engaging hole 2b of the pillar panel 2 and transfers the load from the curtain airbag 4 to the pillar panel 2. There is. As a result, the load from the curtain airbag 4 is distributed to the clip 60 and the engaging convex portion 34, and the load applied to the clip 60 is reduced. As a result, the force acting on the clip 60 in the direction of coming out of the pillar panel 2 is reduced. At the same time, since the fulcrum of the fall of the jump table 20 is dispersed not only to the clip 60 but also to the engaging convex portion 34, the amount of displacement of the lower part of the jump table 20 toward the pillar panel 2 is reduced.

The load receiving portion 35 arranged directly under the clip 40 abuts on the pillar panel 2, and the load from the curtain airbag 4 is transferred to the pillar panel 2 and further distributed. As a result, the load applied to the clip 60 is further reduced, and the force in the direction of coming out of the pillar panel 2 acting on the clip 60 is also further reduced. Therefore, it is possible to prevent the clip 60 from being damaged.

The abutment of the load receiving portion 35 against the pillar panel 2 restricts the movement of the lower part of the jump table 20 to the pillar panel 2 side, and suppresses the collapse of the jump table 20. Therefore, it is possible to prevent the clip 60 from coming out of the clip locking hole 2a and the jump table 20 from falling off from the pillar panel 2.

If the engaging convex portion 34 and the load receiving portion 35 were not provided, the load received from the curtain airbag 4 would be concentrated on the clip 60, but in this embodiment, the load from above from the curtain airbag 4 is , The engaging convex portion 34 and the load receiving portion 35 are dispersed, and the engaging convex portion 34, the clip 60 and the load receiving portion 35 are arranged in a straight line in the vertical direction, so that they are efficiently dispersed. Therefore, the clip 60 is less likely to be damaged, and the jump table 20 is less likely to fall off from the pillar panel 2.

The present invention is not limited to the above embodiment, and various modifications can be adopted without departing from the gist thereof.
The clip seat 30 and the clip 60 may be provided integrally.
The jump stand 20 and the pillar trim main body 10 may be provided integrally.
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.

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)
2a clip locking hole
2b Engagement hole 4 Curtain airbag 20 Jump stand (deployment guide member for curtain airbag)
21 Information wall (information section)
30 Clip seat (mounting base)
33 Clip mounting hole 34 Engagement convex part 35 Load receiving part 60 Clip (mounting part)

Claims (2)

A guide portion that inclines diagonally downward toward the passenger compartment and guides the inflatable curtain airbag toward the passenger compartment and a mounting pedestal portion located below the guide portion are integrally provided, and the mounting pedestal portion is provided. In the deployment guide member of the curtain airbag, which is provided with a mounting portion to be mounted on the vehicle body panel.
The mounting pedestal portion is formed with an engaging convex portion to be inserted into the engaging hole of the vehicle body panel above the mounting portion, and protrudes toward the vehicle body panel below the mounting portion. A load receiving part is formed ,
In a state where the mounting portion is provided on the mounting pedestal portion, the engaging convex portion, the mounting portion, and the load receiving portion are arranged in a straight line in order from the top .
The load receiving portion can abut against the vehicle body panel in a state where the mounting portion provided on the mounting pedestal portion is attached to the vehicle body panel and the engaging convex portion is inserted into the engaging hole of the vehicle body panel. A deployment guide member for a curtain airbag, characterized in that it faces the surface of a curtain airbag. The mounting portion is a clip that is fitted into the locking hole of the vehicle body panel, and the clip is mounted on the mounting pedestal portion by inserting and fixing the clip between the engaging convex portion and the load receiving portion. The deployment guide member for a curtain airbag according to claim 1, wherein a hole is formed.

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