JP6602812B2 - Jump stand for curtain airbag - Google Patents

Description

  The present invention relates to a jumping table that assists in deploying a curtain airbag into a vehicle interior.

  Curtain airbags are provided on both sides of the interior of the automobile, and are deployed in the passenger compartment in the event of a side collision, covering windows and protecting passengers.

  The curtain airbag disclosed in the following Patent Document 1 is disposed on the roof side of the vehicle compartment so as to extend from the front pillar to the center pillar and to the vicinity of the rear pillar in the longitudinal direction of the vehicle body. A pillar trim is provided on the vehicle side of the center pillar, and a jump base for guiding the deployment of the curtain airbag is provided at the upper end of the pillar trim. The jumping table is made of resin, and includes an inclined top plate portion on which the curtain airbag is placed, a pair of side wall portions depending from both side edges in the vehicle length direction of the top plate portion, and a vehicle width direction below the top plate portion. And a boss portion (connecting portion) that protrudes outward and is fixed to the pillar panel.

  At the time of a side collision, the curtain airbag is guided by the top plate portion of the jump base while being inflated by the inflation gas, pushes the roof lining up, and deploys in a curtain shape in the vehicle interior. At this time, the deployment load of the curtain airbag is applied to the jump base. Therefore, in the jump stand of Patent Document 1, in order to increase the strength against the deployment load of the curtain airbag, the lower end of one side wall portion and the upper wall of the boss portion are integrally connected by a plate-like reinforcing rib. .

JP 2009-137414 A

  In the jump stand of Patent Document 1, the plate-like reinforcing rib that connects the lower end of the side wall portion and the upper wall of the boss portion cannot increase the strength of the side wall portion where the unfolding load from the top plate portion is concentrated. .

  In order to solve the above-described problems, the present invention provides an inclined top plate portion on which a curtain airbag is mounted, a pair of side wall portions depending from both side edges in the vehicle length direction of the top plate portion, and a lower portion of the top plate portion. In the jumping table made of a resin molded product provided with a connecting portion that protrudes outward and is connected to the pillar panel in the vehicle width direction, at least one side wall portion of the pair of side wall portions is uneven. A reinforcing portion is formed.

  According to the above configuration, the side wall portion is reinforced by the reinforcing portion, so that the load bearing performance can be improved, and the jump stand can be secured to withstand the deployment load of the curtain airbag.

The reinforcing portion is formed at a lower portion of the side wall portion located on the shortest load transmission path connecting a portion receiving a load when the curtain airbag is deployed in the top plate portion and the connecting portion.
According to the said structure, since the reinforcement part is arrange | positioned on the shortest load transmission path | route, a side wall part can be reinforced efficiently.

Preferably, the reinforcing portion is formed at a boundary between the flat portion and the other region, and a flat portion that is parallel to the other region of the side wall portion and deviates from the other region in the vehicle length direction. And a step portion.
According to the said structure, since a reinforcement part is a comparatively simple shape, it is easy to shape | mold.

Preferably, the reinforcing part is formed at a lower part of the side wall part, and a notch is formed on the outer side in the vehicle width direction of the reinforcing part at the lower part of the side wall part.
The jump stand is also required to be moderately weakened against the load (padding performance) in order to protect the occupant during an impact in the room. According to the said structure, when a passenger | crew hits a jump stand at the time of a vehicle collision, an impact can be absorbed or relieve | moderated by deform | transforming and destroying by a notch formation part.

  Preferably, a pair of the top plate portions are arranged apart from each other in the vehicle length direction, the connecting portion is arranged between the pair of top plate portions, and the connecting portion of the pair of side wall portions of each top plate portion. The reinforcing part is formed on the side wall part closer to the side.

  ADVANTAGE OF THE INVENTION According to this invention, in a jump stand, the load bearing capability at the time of curtain airbag expansion | deployment can be improved.

It is the perspective view which looked at the left seat side pillar trim provided with the jump stand which concerns on one Embodiment of this invention from the vehicle interior side. It is the principal part enlarged rear view which looked at the pillar trim from the vehicle outer side. It is the principal part expansion perspective view which decomposed | disassembled the pillar trim and was seen from the vehicle outer side. It is sectional drawing which follows the IV-IV line of FIG. It is sectional drawing which follows the VV line of FIG. It is the perspective view which looked at the jump stand which concerns on 2nd Embodiment of this invention from the vehicle outer side.

[First Embodiment]
Hereinafter, a jump stand according to a first embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 5, a pillar trim 2 is provided on the passenger compartment side of the pillar panel 1 of the vehicle. Above the roof lining 3 above the pillar trim 2, a curtain airbag 4 is provided so as to be deployable.

  As shown in FIGS. 1 and 2, the pillar trim 2 includes a pillar trim main body 10 and a jump base 20 that is attached to an upper end portion of the pillar trim main body 10 and guides the curtain airbag 4 to be deployed.

  The pillar trim body 10 is configured by injection molding a resin such as polypropylene. The pillar trim body 10 extends in the vertical direction, and has a U-shaped cross section with the vehicle compartment side protruding.

  As shown in FIG. 3, a pair of base mounting portions 12, 12 are provided on both sides of the upper end portion of the back surface of the pillar trim body 10. A first fitting convex portion 14 having an L-shaped cross section is formed on the upper end portion of the base mounting portion 12. A cross-shaped second fitting convex portion 16 is formed at the center of the base mounting portion 12, and a cylindrical screw screw portion 18 is formed below the second fitting convex portion 16.

In this embodiment, the jump stand 20 is separate from the pillar trim main body 10 and integrally includes a lower mounting portion 20A and an upper pair of airbag support portions 20B. The jump stand 20 is configured by injection molding a resin such as polypropylene.
The mounting portion 20A has a center panel connecting portion 30 (connecting portion) and a pair of trim connecting portions 21 arranged on both sides thereof (both sides in the vehicle longitudinal direction).

  Each of the pair of trim connecting portions 21 has a shelf wall portion 22 that is substantially horizontal, and a main wall portion 23 that extends substantially vertically downward from an outer edge of the shelf wall portion 22. The shelf wall portion 22 is formed with a first fitting hole 22a having an L shape. A second fitting hole 23a having a rectangular shape is formed in the main wall 23, and a circular insertion hole 23b is formed below the second fitting hole 23a.

  As shown in FIG. 2, the shelf wall portion 22 and the main wall portion 23 of the jump base 20 are overlapped with the upper end portion of the back surface (the surface facing the vehicle exterior) of the pillar trim body 10. As shown in FIGS. 2 and 5, the shelf wall portion 22 covers the upper end portion of the base mounting portion 12, and the main wall portion 23 covers the vehicle outer surface of the base mounting portion 12. The first fitting convex part 14 is fitted into the first fitting hole 22a, and the second fitting convex part 16 is fitted into the second fitting hole 23a. Further, the screw screwing portion 18 is fitted into the insertion hole 23 b, and the screw 50 is screwed into the screw screwing portion 18. Thereby, the jump stand 20 is connected to the pillar trim body 10.

  As shown in FIG. 3, the panel connecting portion 30 protrudes from the trim connecting portion 21 in the vehicle outer direction (the vehicle outer side in the vehicle width direction). The panel connecting portion 30 includes a seat plate portion 31 and a pair of side plate portions 32 and 32. The seat plate portion 31 is formed with a clip mounting hole 31a and a load delivery portion 31b. The clip mounting hole 31 a reaches the side plate portion 32 on one side from the center portion of the seat plate portion 31. The load delivery part 31b is provided above and in the vicinity of the clip mounting hole 31a. The load delivery portion 31b has a U-shaped cross section and protrudes from the seat plate portion 31 in the vehicle outward direction.

As shown in FIGS. 4 and 5, the clip 60 is mounted in the clip mounting hole 31 a of the panel connecting portion 30. The clip 60 is locked in the clip locking hole 1 a of the pillar panel 1.
The load delivery portion 31 b is inserted into the load receiving hole 1 b of the pillar panel 1. Thereby, the jump stand 20 is connected to the pillar panel 1.

Each of the pair of airbag support portions 20B on the upper side of the jumping base 20 has a front wall portion 24 standing substantially perpendicular to the indoor side edge of the shelf wall portion 22, and an upper edge of the front wall portion 24. It has a continuous top plate portion 25 and a pair of side wall portions 26 and 27 that hang down from both side edges of the top plate portion 25 in the vehicle length direction.
Therefore, as a whole shape of the jump stand 20, the panel connecting portion 30 is disposed between the top plate portions 25 of the pair of airbag support portions 20B.

  The top plate portion 25 is inclined obliquely downward toward the passenger compartment. As shown in FIGS. 4 and 5, the bottom surface of the upper end portion of the top plate portion 25 (the back side surface facing the outside of the vehicle) is a load receiving portion 1 c of the pillar panel 1 when the jump stand 20 is assembled to the pillar panel 1. Or a little spaced apart and play a role as a contact portion 25a.

  As shown in FIG. 1, on the upper surface of the upper end portion of the top plate portion 25 (the surface on the front side facing the passenger compartment), there are four plate-like front-side reinforcing ribs 25b that are trapezoidal in shape when viewed from the side. A plurality). The front-side reinforcing ribs 25 b stand vertically from the front-side surface of the top plate portion 25.

  As shown in FIGS. 3 and 5, a plate-like back side reinforcing rib 25 c is provided on the lower surface of the top plate part 25 (the back side facing the vehicle outer side) with the plate surface facing the vehicle length direction, The front wall portion 24 and the shelf wall portion 22 are connected. In this embodiment, two rear support ribs 25c are provided on the front support portion 20B in the vehicle length direction, and one on the rear support portion 20B in the vehicle length direction. The back side reinforcing rib 25c is formed in the vicinity of the contact portion 25a in order to avoid interference with the load receiving portion 1c of the pillar panel 1 when the jump base 20 is assembled to the pillar panel 1 (FIG. 5). Not.

Each of the pair of side wall portions 26, 27 is connected to the top plate portion 25, the front wall portion 24, and the shelf wall portion 22, and faces the wall surface in the vehicle length direction. As with the back side reinforcing rib 25c, the side wall portions 26 and 27 are arranged in order to avoid interference with the load receiving portion 1c of the pillar panel 1 when the jump base 20 is assembled to the pillar panel 1 (FIG. 5). It is not formed near the contact portion 25a.
As shown in FIG. 3, of the pair of side wall portions 26 and 27, the lower end portion of the side wall portion 26 on the inner side in the width direction of the jumping base 20 (the center portion side in the direction along the vehicle length direction) is the panel connecting portion 30. The side plate portion 32 is connected.

  Further, an uneven reinforcing portion 40 is formed below the inner side wall portion 26. The reinforcing part 40 has a flat part 41 and a step part 42. The flat surface portion 41 is biased from the wall surface of the side wall portion 26 (the region other than the reinforcing portion 40 of the side wall portion 26) toward the side of the side wall portion 27 on the outer side in the width direction of the jump base 20. As shown in FIG. 5, the flat surface portion 41 is continuous with the front wall portion 24, the shelf plate portion 22, and the main wall portion 23.

As shown in FIG. 3, the step portion 42 is connected to the flat portion 41 and the side wall portion 26. The step portion 42 extends vertically from the side wall portion 26 toward the side wall portion 27.
As shown in FIG. 4, the step portion 42 is inclined downward (inclined toward the panel connecting portion 30) toward the outer side in the vehicle width direction, and an end portion on the vehicle outer side of the inclined portion 42 a. And a hanging part 42b that hangs down.

  As shown in FIGS. 2 and 4, a plate-like sub-reinforcing portion 45 connecting the hanging portion 42 b of the stepped portion 42 and the side plate portion 32 of the panel connecting portion 30 is formed at the lower portion of the reinforcing portion 40 on the vehicle outer side. The surface is provided in the vertical direction. As shown in FIGS. 2 and 4, the auxiliary reinforcing portion 45 is disposed at substantially the same height as the upper end portion of the load delivery portion 31 b of the panel connecting portion 30.

  As shown in FIG. 4, the reinforcing portion 40 having the above-described configuration is formed on the shortest load transmission path that connects the portion receiving the deployment load F of the curtain airbag 3 and the panel connecting portion 30 in the top plate portion 25. Yes.

  The curtain airbag 4 is supported on the jump base 20 so as to be placed on the top plate portion 25 on the indoor side from the front-side reinforcing rib 25b. When inflation gas is introduced into the curtain airbag 4 at the time of a vehicle collision, the curtain airbag 4 is guided to the top plate portion 25 and inflated toward the passenger compartment side, and the roof lining 3 is pushed open to enter the passenger compartment. Expands into a curtain. Expansion of the curtain airbag 4 in the vehicle outward direction is restricted by the front side reinforcing rib 25b.

  When the curtain airbag 4 is deployed, a deployment load F of the curtain airbag 4 is applied to the top plate portion 25. The developed load F is mainly transmitted to the load delivery portion 31b of the panel connection portion 30 and the clip 60 through the lower portion of the side wall portion 26 on the shortest load transmission path from the top plate portion 25 to the panel connection portion 30 to be pillars. Received by panel 1.

  Since the lower part of the side wall part 26 is reinforced by the reinforcing part 40, the side wall part 26 can be prevented from being deformed or damaged. That is, it is possible to improve the load bearing performance when the curtain airbag 4 is deployed on the jump base 20.

In the reinforcing part 40, since the inclined part 42a of the step part 42 is substantially along the direction of action of the development load F, the reinforcing effect can be enhanced.
In the present embodiment, the auxiliary reinforcing portion 45 integrally connects the reinforcing portion 40 and the side plate portion 32 of the panel connecting portion 30, so that the boundary portion between the reinforcing portion 40 and the upper end portion of the panel connecting portion 30 is reinforced. Can do.

  In the present embodiment, when the jump base 20 is assembled to the pillar panel 1, the contact portion 25a at the upper end portion of the top plate portion 25 is in contact with the load receiving portion 1c of the pillar panel 1 or is slightly separated. The edge surfaces of the side walls 26 and 27 on the outside of the vehicle are in contact with or slightly spaced from the side wall load receiving portion 1d of the pillar panel 1. When the curtain airbag 4 is deployed, a part of the deployment load F is received by the load receiving portions 1c and 1d.

  Next, another embodiment of the present invention will be described. In the following embodiment, only the configuration different from the above embodiment will be described, and the same components are denoted by the same reference numerals and the description thereof will be omitted.

[Second Embodiment]
FIG. 6 shows a second embodiment of the present invention.
The jumping base is required to have a strength that can withstand the deployment load of the curtain airbag, but also needs to be weakened against an indoor impact in order to protect the passenger. Therefore, in this embodiment, the notch is formed in the side wall part in which the reinforcement part was provided.

  A notch 26 a that is cut out in a V shape from the outside in the vehicle width direction toward the inside of the vehicle is formed at the lower end of the side wall 26 on the inside in the width direction of the jumping base 20. The notch 26 a is located above the auxiliary reinforcing portion 45, and the deepest portion of the notch 26 a reaches the vicinity of the vehicle outer surface of the hanging portion 42 b of the reinforcing portion 40.

When the occupant collides with the vehicle at the time of a vehicle collision and the jump base 20 receives an impact in the vehicle width direction or the outward direction from the vehicle interior, the formation portion of the notch 26a is deformed or damaged to absorb or mitigate the impact. Can do.
That is, in this embodiment, it is possible to achieve both the securing of the strength of the jump base 20 with respect to the deployment load F of the curtain airbag 4 and the securing of the vulnerability of the jump base 20 for passenger protection against an interior impact.

In addition, this invention is not limited to the said embodiment, In the range which does not deviate from the summary, various modifications can be employ | adopted.
You may form a reinforcement part in both a pair of side wall parts.
The jump stand may be integrated with the pillar trim body.
The number of airbag support portions with the top plate portion is not limited to two, and may be one or three or more.
You may arrange | position a jump stand above pillar trims other than a center pillar.

  The present invention can be applied to a jumping table that assists in deploying a curtain airbag into a vehicle interior.

1 Pillar panel 2 Pillar trim 20 Jump stand 25 Top plate part 26 Side wall part (One side wall part, side wall part closer to the connecting part)
27 Side wall part 26a Notch 30 Panel connection part (connection part)
40 Reinforcement part 41 Flat part
42 Step 4 Curtain airbag

Claims (5)

A pair of airbag support portions spaced apart in the vehicle length direction, and a panel connecting portion disposed between the pair of airbag support portions below the pair of airbag support portions,
Each of the pair of airbag support portions has an inclined top plate portion on which the curtain airbag is placed, and a pair of side wall portions depending from both side edges in the vehicle length direction of the top plate portion ,
A jump base made of a resin molded product , wherein the panel connecting portion includes a seat plate portion connected to the pillar panel, and a pair of side plate portions that extend inward in the vehicle width direction from both side edges in the vehicle length direction of the seat plate portion. In
Of the pair of side wall portions of each of the pair of airbag support portions , a reinforcing portion is formed at a lower portion of the side wall portion on the panel connecting portion side ,
The reinforcing portion is formed at a boundary between the flat portion and the other region, and a flat portion that is parallel to the other region of the side wall portion on the panel connecting portion side and deviates from the other region in the vehicle length direction. A stepped portion, and the stepped portion has a continuous surface,
Each of the pair of side plate portions of the panel connecting portion is connected to the step portion of the reinforcing portion via a sub-reinforcing portion . The step portion includes an inclined portion that is inclined downward toward the vehicle width direction outer side, and a hanging portion that is suspended from an end portion on the vehicle outer side of the inclined portion, and the hanging portion of the reinforcing portion and the panel connecting portion The jump plate for a curtain airbag according to claim 1, wherein the side plate portions are connected by the auxiliary reinforcing portion. The jump stand for a curtain airbag according to claim 2, wherein the sub-reinforcing portion has a plate shape, and a plate surface thereof is directed vertically. The jump stand for a curtain airbag according to any one of claims 1 to 3, wherein lower ends of the side wall portions on the panel connecting portion side are connected to a pair of side plate portions of the panel connecting portion. The cutout is formed between the lower end of the side wall part on the panel connecting part side and the side plate part of the panel connecting part on the outer side in the vehicle width direction of the reinforcing part. The jump stand for curtain airbags in any one of -3.

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