JP2019123489A - Deployment guide member of curtain airbag - Google Patents

Abstract

To provide a deployment guide member of a curtain airbag which prevents falling from a pillar panel.SOLUTION: A jump base 20 (a deployment guide member) integrally has a guide wall 21 which inclines to the oblique lower side toward a vehicle cabin and guides an inflating curtain airbag 4 to the vehicle cabin and a clip seat 30 located below the guide wall 21. The clip seat 30 is formed with a clip attachment hole 33 into which a clip 60 is fixedly inserted. The clip 60 fits in a fitting hole 2a of a pillar panel 2. In the clip seat 30, an engagement protruding part 34 which is inserted into an engagement hole 2b of the pillar panel 2 is formed above the clip attachment hole 33 and a load receiving part 35 protruding to the pillar panel 2 is formed below the clip attachment hole 33. The engagement protruding part 34, the clip 60, and the load receiving part 35 are arranged on a straight line from the top.SELECTED DRAWING: Figure 3

Description

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

  The curtain airbag is provided on the roof side of the vehicle, and inflates and deploys in the form of a curtain in the vehicle compartment at the time of a side collision of the vehicle to cover the door and protect the occupant. A jump platform is provided as a guide member above the pillar trim to deploy the curtain airbag into the vehicle compartment. In the jump stand, the inflating curtain airbag is abutted to guide the curtain airbag to the cabin side.

  The jumping platform disclosed in Patent Document 1 below has a slope that inclines obliquely downward toward the compartment and guides the expanding curtain airbag toward the compartment, and is positioned above the back side of the slope. The locking claws are attached to the vehicle body panel by being fitted into the locking holes of the vehicle body panel.

  In the jump stand, a projection is formed below the locking claw and at a position shifted in the width direction (vehicle length direction) of the jump stand. The projection is inserted into the insertion hole of the vehicle body panel with a gap. Further, on the jump stand, there is formed a projection projecting toward the vehicle body panel at a position between the locking claw and the projection in the vertical direction and shifted in the width direction from the locking claw and the projection. ing.

  When the inflation gas is introduced into the curtain airbag, the load of the curtain airbag that is inflated is applied to the inclined portion of the jump stand, the lower part of the jump stand approaches the vehicle body panel with the locking claw as a fulcrum, and the jump stand is a car I try to fall into the room. At this time, the protrusion abuts on the vehicle body panel, and the protrusion abuts on the insertion hole, thereby dispersing the load from the curtain airbag and suppressing the fall of the jump platform to the vehicle compartment side.

Patent No. 5811466

  In the jump stand of Patent Document 1, the load from the curtain airbag is dispersed by bringing the projection and the projection into contact with the vehicle body panel. However, the jump stand of Patent Document 1 has a structure in which the lower portion of the jump stand is elastically deformed toward the vehicle body panel side with the locking claw as a fulcrum by the gap between the projection and the insertion hole when the curtain airbag is deployed. The excessive load was concentrated on the hooks, and the fall of the jump platform was not sufficiently suppressed.

  Further, since the locking claws, the protrusions and the protrusions are provided mutually offset in the width direction of the jump stand, the distribution of the load concentrated on the locking claws is not sufficient. Therefore, when the jump stand tries to fall down, the locking claw may be broken, or the locking claw may come off from the locking hole of the vehicle body panel, and the jump platform may be dropped from the vehicle body panel. .

  The present invention has been made to solve the above-mentioned problems, and is directed downward to a casing, and guides a curtain airbag that inflates toward the casing and inflating the curtain airbag, and the guide is positioned below the guidance. In the spread guide member of the curtain airbag, which integrally has a mounting base portion to be mounted and the mounting base portion is provided with a mounting portion to be mounted to the vehicle body panel, the mounting pedestal portion is provided 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 projecting toward the vehicle body panel is formed below the mounting portion, and the mounting portion is the mounting In the state of being provided to the pedestal, the engaging convex portion, the attaching portion, and the load receiving portion are disposed in a straight line in order from the top.

According to the above configuration, when the curtain airbag is deployed, the load received by the guide portion of the deployment guide member from the inflating curtain airbag is dispersed to the engagement convex portion and the attachment portion. Thus, the load applied to the mounting portion is reduced, and the force in the direction in which the mounting portion is disengaged from the vehicle body panel is reduced. At this time, even if the deployment guide member tries to fall to the compartment side, the fulcrum of the fall is also dispersed to the engaging convex portion and the mounting portion, so the displacement amount of the lower part of the deployment guide member to the vehicle body panel side decreases. .
The load receiving portion disposed below the mounting portion abuts against the vehicle body panel, and the load from the curtain airbag is further dispersed to further reduce the load applied to the mounting portion. The load from the curtain airbag is efficiently dispersed by the linear arrangement of the engagement convex portion, the mounting portion and the load receiving portion.
The movement of the lower part of the deployment guide member to the side of the vehicle body panel is restricted by the abutment of the load receiving portion against the vehicle body panel, and the fall-down of the deployment guide member is suppressed. Therefore, it is possible to prevent the mounting portion from coming off the vehicle body panel and the deployment guide member from coming off the vehicle body panel.

Preferably, the mounting portion is a clip fitted in the fitting hole of the vehicle body panel, and the clip is inserted and fixed to the mounting pedestal portion between the engagement convex portion and the load receiving portion. A clip mounting hole is formed.
According to the above configuration, by inserting and fixing the clip into the clip mounting hole, the clip is positioned between the engagement convex portion and the load receiving portion. That is, the load from above which originates in the curtain airbag applied to the clip is dispersed to the engagement convex portion and the load receiving portion located on the upper and lower sides of the clip. Therefore, it is possible to prevent the clip from being pulled out or broken from the vehicle body panel, and it is possible to prevent the falling off of the deployment guide member 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 the vehicle body panel.

It is the perspective view which looked at the left seat side pillar trim provided with the jump stand (deployment guide member) concerning one embodiment of the present invention from the room side. It is the principal part expansion perspective view which looked the same pillar trim from the vehicle outer side. It is the principal part expansion perspective view which disassembled the said pillar trim and was seen from the vehicle outer side. It is sectional drawing in alignment with 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 as shown in FIG. 4, is provided on the vehicle compartment side of the pillar panel 2 (vehicle body panel) of the vehicle. Above the roof lining 3 above the pillar trim 1, a curtain airbag 4 is provided so as to be deployable.

  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 to guide the expanding curtain airbag 4 toward the cabin. Member).

  The pillar trim body 10 is configured by injection molding of a resin such as polypropylene, for example. The pillar trim main body 10 extends in the vertical direction along the pillar panel 2 and has a U-shaped cross section in which the passenger compartment side is convex.

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

  In this embodiment, the jump stand 20 is separate from the pillar trim body 10, and is formed by injection molding of a resin such as polypropylene.

  As shown in FIG. 3, the jump stand 20 integrally has a pair of upper air bag support portions 20A, 20A and a lower connection portion 20B.

  Each airbag support portion 20A integrally includes a guide wall 21 (guide portion) and an intermediate support wall 22. The guide wall 21 is inclined downward from the upper end portion toward the compartment side (left side in FIG. 4) in the vehicle width direction. An intermediate support wall 22 is connected to the lower end portion 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 (surfaces facing the vehicle outer side) of the guide wall 21 and the intermediate support wall 22. The reinforcing rib 23 extends vertically and spans 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. The side wall 25 on the side of the air bag support portion 20A adjacent to the air bag support portion 20A extends from the lower end of the guide wall 21 to the outer side of the vehicle width direction and inclines downward. And a hanging wall 25b. A flat wall 25c is provided at the end of the inclined wall 25a and the depending 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 base portion) disposed at the center in the vehicle length direction and a pair of base side assembling portions 40, 40 disposed on both sides thereof (both sides in the vehicle length direction). doing. The base side attaching parts 40, 40 are used for attaching the jump stand 20 to the pillar trim main body 10, and the clip seat 30 is attached to the pillar panel 1 of the pillar trim 1 composed of the jump stand 20 and the pillar trim main body 10. Used for

  Each pedestal side mounting portion 40 has a substantially horizontal shelf wall 41 and a main wall 42 extending substantially vertically downward from an outer edge of the shelf wall 41. On the upper surface of the shelf wall 41, the lower end portions of the intermediate support wall 22, the reinforcing rib 23, the side wall 24, and the flat wall 25c in the air bag support portion 20A are integrally connected. An L-shaped first fitting hole 41 a is formed in the shelf wall 41. The main wall 42 is formed with a second fitting hole 42b having a rectangular shape, and a third fitting hole 42c having a circular shape is formed below the second fitting hole 42b.

The assembly of the jump stand 20 to the pillar trim body 10 will be described.
As shown in FIG. 2, the shelf wall 41 and the main wall 42 of the jump stand 20 are superimposed on 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 assembling portion 12 shown in FIG. 3, and the main wall 42 covers the outer side surface of the trim side assembling 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 screwing hole 18a while forming a female screw. Thus, the jump stand 20 is assembled to the pillar trim body 10.

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

  The pair of side plate portions 32, 32 face apart in the width direction of the jump stand (the direction along the vehicle length direction) and project from the main wall 42 to the outside in the vehicle width direction. Each side plate portion 32 is formed to be relatively thin, and its cross section is bent in a step-like manner. The seat plate portion 31 is bridged between the end portions on the vehicle outer side of the pair of side plate portions 32, 32. At an upper end portion of each side plate portion 32, a reinforcing plate 32a connecting the side plate portion 32 and the hanging wall 25b of the air bag support portion 20A is provided with the plate surface facing in the vertical direction.

  A clip mounting hole 33 is formed in the seat plate portion 31 of the clip seat 30, and an engagement convex portion 34 and a load receiving portion 35 are respectively provided on the upper and lower sides thereof. The engagement convex portion 34, the clip mounting hole 33, and the load receiving portion 35 are disposed in line in order from the top.

  The clip mounting hole 33 includes a holding hole 33a and a guide opening 33b. The holding hole portion 33 a is formed in a circular shape, and is disposed at 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, and reaches the one side plate 32.

  The engagement convex portion 34 has a pair of side wall portions 34 a and 34 a and a bottom wall portion 34 b and is U-shaped, and protrudes from the seat plate portion 31 to the vehicle outer side 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 lower end portions of the side wall portions 34a, 34a are connected 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 disposed immediately below the holding hole portion 33a and at the lower end of the seat plate portion 33, protrudes from the seat plate portion 33 to the vehicle outer side 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 35b is at a position slightly forward from the center of the seat plate portion 33 in the vehicle length direction. is there. As shown in FIG. 4, the load receiving portion 35 is slightly rounded at the end 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, the mounting structure of 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 from the guide opening 33 b of the clip mounting hole, and is held by the holding hole 33 a as shown in FIGS. 2 and 4. Thereby, the clip 60 is attached to the jump stand 20 and, in turn, to the pillar trim 1. At this time, as shown in FIG. 4, the locking portion 61 protrudes from the clip seat 30 to the outer side in the vehicle width direction. The locking portion 61 is locked to the clip locking hole 2 a of the pillar panel 2.
An engagement hole 2 b is formed immediately above the clip locking hole 2 a in the pillar panel 2. The engagement convex portion 34 is inserted into the engagement hole 2 b.

Next, the deployment of the curtain airbag 4 will be described.
As shown in FIG. 4, the curtain airbag 4 is supported on the guide wall 21 of the jump stand 20. When an inflation 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 and inflated toward the vehicle compartment, pushing open the roof lining 3 and curtaining the vehicle interior Expand into a shape.

  At the time of deployment of the curtain airbag 4, a deployment load F of the curtain airbag 4 is applied to the guide wall 21. The deployment load F is mainly transmitted to the clip 60 of the clip seat 30 via the lower portion of the side wall 25 on the shortest load transfer 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 part of the jump stand 20 approaches the pillar panel 2 and the jump stand 20 tries to fall into the vehicle compartment side. The force in the direction of coming out of the clip locking hole 2 a of the pillar panel 2 acts on the clip 60. At this time, in the engagement convex portion 34 directly above the clip 60, the bottom plate portion 34b abuts on the lower portion of the engagement hole 2b of the pillar panel 2 to transfer the load from the curtain airbag 4 to the pillar panel 2 There is. Thereby, the load from the curtain airbag 4 is distributed to the clip 60 and the engagement convex portion 34, and the load applied to the clip 60 is reduced. As a result, the force in the direction of coming out of the pillar panel 2 acting on the clip 60 is reduced. At the same time, the fulcrum of falling of the jumping platform 20 is dispersed not only to the clip 60 but also to the engaging convex portion 34, so the amount of displacement of the jumping platform 20 toward the pillar panel 2 decreases.

  The load receiving portion 35 disposed immediately below the clip 40 abuts against the pillar panel 2, and the load from the curtain airbag 4 is transferred to the pillar panel 2 and dispersed further. Thereby, 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 further reduced. Therefore, breakage of the clip 60 can be prevented.

  By the impact of the load receiving portion 35 on the pillar panel 2, the movement of the lower part of the jumping platform 20 to the side of the pillar panel 2 is restricted, and the falling of the jumping platform 20 is suppressed. Therefore, the clip 60 can be prevented from coming out of the clip engagement hole 2 a and the jumping platform 20 falling off the pillar panel 2.

  If the engaging convex portion 34 and the load receiving portion 35 do not exist, the load received from the curtain airbag 4 is concentrated on the clip 60, but in this embodiment, the load from above the curtain airbag 4 is Because the engagement convex portion 34 and the load receiving portion 35 are dispersed, and the engagement convex portion 34, the clip 60, and the load receiving portion 35 are disposed on a straight line in the vertical direction, the components are efficiently dispersed. Therefore, the clip 60 is less likely to be broken, and the jump stand 20 is less likely to come off the pillar panel 2.

The present invention is not limited to the above embodiment, and various modifications can be adopted without departing from the scope of the invention.
The clip seat 30 and the clip 60 may be integrally provided.
The jump stand 20 and the pillar trim main body 10 may be integrally provided.
In the above-mentioned embodiment, although the pair of airbag support parts 20A of jump stand 20 was provided, one may be sufficient and three or more may be sufficient.

  The present invention can be applied to a guide member that assists the deployment of a curtain airbag into a vehicle compartment.

2 pillar panel (body panel)
2a mating hole 2b engagement hole 4 curtain airbag 20 jump stand (curtain airbag deployment guide member)
21 guide wall (guide part)
30 Clip seat (mounting pedestal)
33 clip mounting hole 34 engagement convex portion 35 load receiving portion 60 clip (mounting portion)

Claims (2)

A guide unit that inclines obliquely downward toward the vehicle compartment and guides the expanding curtain airbag toward the vehicle compartment and a mounting base unit positioned below the guide unit are integrally formed, and the mounting base unit The curtain airbag deployment guide member is provided with an attachment portion attached to the vehicle body panel.
The mounting pedestal portion is formed with an engagement convex portion which is inserted into the engagement hole of the vehicle body panel above the mounting portion, and a load receiving member which protrudes toward the vehicle body panel below the mounting portion The part is formed,
In the state in which the mounting portion is provided on the mounting base portion, the engagement convex portion, the mounting portion, and the load receiving portion are disposed on a straight line in order from the top, Curtain airbag deployment guide member.   The mounting portion is a clip to be fitted into the fitting hole of the vehicle body panel, and the clip mounting hole into which the clip is inserted and fixed in the mounting pedestal portion between the engagement convex portion and the load receiving portion The curtain airbag deployment guide member according to claim 1, wherein the curtain airbag is formed.

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