JP2019093915A - Interior member for vehicle - Google Patents

Abstract

To provide an interior member for a vehicle which can hold an impact alleviation function while possessing sufficient stiffness, and can stabilize a starting point of folding and bending at the deployment of an airbag.SOLUTION: A front pillar trim 50 is formed into a cross section U-shape while having a base wall part 51 at which a clip seat 54 is formed, and sidewall parts 52, 53, and accommodates an airbag 80 between the clip seat 54 and the sidewall part 52. A first rib 55 extending toward the sidewall part 52 from the clip seat 54, and a second rib 56 extending toward the clip seat 54 from the sidewall part 52 are alternately arranged at the pillar trim 50 in a longitudinal direction. Terminal end parts 55a, 56a of the first and second ribs have inclined contour lines by being gradually lowered in heights. When viewing from the longitudinal direction of the pillar trim 50, the terminal end part 55a of the first rib and the terminal end part 56a of the second rib are overlapped on each other, and a recess C is formed of the inclined contour lines of the overlapped terminal end parts 55a, 56a.SELECTED DRAWING: Figure 3

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an interior member for a vehicle, and more particularly to an interior member for a vehicle that accommodates an air bag therein and is attached to a vehicle body by a clip.

  The pillars and roofside interior members that may collide with the head of the occupant in the event of a vehicle collision are required to have sufficient rigidity to reduce the impact on the head. Therefore, a resin rib is provided inside the interior member as a shock absorbing structure. The resin rib mitigates the impact applied to the head by deformation or brittle fracture.

  In addition, a curtain airbag may be mounted to protect an occupant from a side collision load. The curtain airbag is disposed in a folded state from the roof side of the vehicle body to the cabin side along the front pillar. On the cabin side of the curtain airbag, a roof trim covering the roof side and the roof panel and a front pillar trim covering the front pillar are generally provided as interior members.

  When a side impact load is applied to the vehicle body, the curtain airbag is inflated by the gas supplied from the inflator, and the inflation pressure causes the side edge portion of the roof trim and the front pillar trim continuous to the side edge portion. Push the side edges open and deploy along the inside of the window glass or pillar to protect the occupants.

  The interior member disclosed in FIG. 3 of Patent Document 1 is a pillar trim disposed on the cabin side of the front pillar, and has a base wall and a pair of side walls to form a U-shaped cross section, the base wall The clip seat is formed to project to the outside of the vehicle. A curtain airbag is accommodated in the interior space of the pillar trim and disposed between the clip seat and one side wall.

  On the base wall of the pillar trim, an impact absorbing member consisting of a longitudinal rib and a transverse rib is disposed. Of the bottom surface of the shock absorbing member, a portion far from the air bag is attached to the base wall portion, and an end portion on the air bag side of the attachment surface is a bending starting point when one side wall portion is pushed open by the air bag ). At the time of air bag deployment, one of the side wall portions is pushed open toward the passenger compartment side on the basis of the folding starting point. Therefore, stable airbag deployment is possible without causing breakage or the like of the clip seat. However, the rigidity at a portion without a shock absorbing member, such as a side wall portion, has to be reduced, resulting in a reduction in the shock absorbing function.

  The interior member disclosed in FIG. 3 of Patent Document 2 is a pillar trim disposed on the vehicle compartment side of the front pillar, and includes a plurality of clip members extending continuously from one side of the clip seat to one side wall portion for accommodating the airbag. Ribs are formed. Thereby, in this pillar trim, the rigidity which satisfies an impact relaxation function can be maintained.

JP 2003-226216 JP, 2015-137044, A

  In the pillar trim shown in FIG. 3 of Patent Document 2, since the plurality of ribs extend continuously from the clip seat to one side wall, when one side wall is pushed open at the time of air bag deployment, the bending start point is not determined , The airbag deployment was not stable. As a result, the clip seat is broken before the side wall portion is pushed open, and the pillar trim is dropped.

In order to solve the above-mentioned subject, the interior member for vehicles of the present invention has a base wall part and a pair of side wall parts, and makes cross section U shape. A clip seat is formed on the base wall portion so as to project outward from the vehicle, and an air bag passing between the clip seat and one side wall portion is accommodated in the internal space of the interior member.
The interior member extends from the clip seat toward the one side wall, and has a plurality of first ribs having end portions separated from the one side wall, and the one side wall toward the clip seat And a plurality of second ribs having end portions remote from the clip seat.
The first rib and the second rib are alternately arranged in the longitudinal direction of the interior member. The end of the first rib has an inclined outline by gradually reducing the height from the base wall toward the one side wall. The end of the second rib has an inclined contour by gradually reducing the height from the base wall toward the clip seat.
When viewed from the longitudinal direction of the interior member, the end of the first rib and the end of the second rib overlap, and the inclined contour of the overlapping end of the overlapping of the first rib and the second rib A recess is formed by the intersection.

  According to the above configuration, when viewed from the longitudinal direction of the interior member, since the end of the first rib and the end of the second rib overlap, sufficient rigidity can be obtained, and the shock absorbing function can be maintained. . When one side wall is pushed open at the time of deployment of the air bag, the base wall is broken starting from the line passing through the recess formed by the outlines of the end portions of the first and second ribs, so a smooth air bag Deployment is possible.

Preferably, the recess is V-shaped.
According to the above configuration, the line at which the base end is bent when the air bag is deployed is more clearly formed by the deepest portion of the V-shaped recess, so that the break starting point can be reliably controlled.

  According to the present invention, the airbag can be smoothly deployed by controlling the origin of bending at the time of deployment of the airbag while securing sufficient rigidity to retain the shock absorbing function of the interior member.

It is the perspective view which looked at the front pillar trim which concerns on one Embodiment of this invention from the vehicle outer side. It is the principal part enlarged rear view which looked at the front pillar trim from the vehicle outer side. It is sectional drawing in alignment with the III-III line of FIG. It is sectional drawing similar to FIG. 3 of the pillar trim, Comprising: The pillar trim shows the state which received pushing pressure force at the time of air bag expansion | deployment, and the side wall part was pushed open.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. In this embodiment, the interior member for a vehicle of the present invention is applied to a front pillar trim that covers the cabin side of a front pillar of a vehicle.

  As shown in FIG. 3, the front glass 20 is attached to the front end of the front pillar 10, and the front door 30 is attached to the rear end so as to be able to open and close. The front pillar 10 has a closed cross-section structure by an inner panel 11 on the passenger compartment side and an outer panel 12 on the vehicle outer side, and the inside is partitioned by a reinforcing panel 13. A rear flange portion 10 a is formed by the flange portion at the rear end of the inner panel 11 and the flange portion at the rear end of the outer panel 12. An opening weather strip 40, which is a seal member for the front door 30, is provided on the rear flange portion 10a.

  The front pillar trim 50 shown in FIGS. 1 to 3 is an example of a vehicle interior member according to the present invention, and is integrally formed into a shape that can cover the front pillar 10 by injection molding of a resin such as polypropylene (PP). It is molded. The pillar trim 50 has a base wall portion 51 and a pair of side wall portions 52 and 53 and has a U-shaped cross section.

  A clip seat 54 is formed on the base wall portion 51 so as to protrude outward of the vehicle. As shown in FIG. 2, the clip seat 54 includes a pair of upright wall portions 54 a and 54 b extending from the base wall 51 to the outside of the vehicle, a pedestal portion 54 c connecting tips of the upright wall portions 54 a and 54 b, and an upright wall A connecting wall portion 54d is provided to connect the end portions on the front side in the vehicle length direction of the portions 54a and 54b. A clip hole 54f is formed in the pedestal 54c.

  As shown in FIG. 3, the clip 60 is attached to the clip seat 54 by fitting one end thereof to the clip hole 54f of the pedestal 54c. The other end of the clip 60 is fitted in a clip hole formed in the bracket 70. The bracket 70 is formed in a bridge shape in the longitudinal direction of the front pillar 10 (the direction perpendicular to the sheet of FIG. 3), and two unshown foot portions of the bracket 70 are fixed to the inner panel 11 by welding. Thus, the front pillar trim 50 is attached to the front pillar 10 and covers the passenger compartment side of the front pillar 10. The sidewall portion 52 of the protrusion pillar trim 50 opposite to the windshield 20 is elastically supported by the lip portion 40 a of the opening weather strip 40.

  A space portion S (internal space) is formed between the front pillar trim 50 and the front pillar 10. A curtain airbag 80 extending from a roof side portion (not shown) is disposed in a folded state and accommodated in the space portion S on the cabin side of the upper end portion of the front pillar 10. In the space portion S, the curtain airbag 80 is disposed on the opening weather strip 40 side with respect to the clip seat 54.

  Two first ribs 55 extending from the upstanding wall 54a to the side wall 52 on the opening weather strip 40 side are provided on the clip seat 54 at the upper end of the back surface (vehicle outer surface) of the front pillar trim 50 There is. As shown in FIG. 3, the end 55 a of the first rib 55 is located at the base wall 51 closer to the rising wall 54 a than the middle between the rising wall 54 a and the edge of the side wall 52. The height of the first rib 55 from the base wall 51 is gradually reduced from the side of the standing wall 54a to the end 55a, and has an inclined outline. In particular, at the end portion 55a, the height from the base wall portion 51 is linearly reduced.

  Further, on the back surface of the front pillar trim 50, two second ribs 56 extending from the side wall 52 toward the clip seat 54 at the upper end are provided. As shown in FIG. 3, the end portion 56 a of the second rib 56 is located at the base wall 51 closer to the rising wall 54 a than the middle between the rising wall 54 a of the clip seat 54 and the edge of the side wall 52. There is. The height of the second rib 56 from the base wall 51 is gradually reduced from the side wall 52 side to the end 56 a and has an inclined outline. In particular, at the end portion 56a, the height from the base wall portion 51 is linearly reduced.

  As shown in FIG. 2, the first ribs 55 and the second ribs 56 are alternately arranged in the longitudinal direction of the front pillar trim 50. As shown in FIG. 3, when viewed from the longitudinal direction of the front pillar trim 50, the end 55a of the first rib 55 and the end 56a of the second rib 56 overlap, and the end portions 55a, 56a are linearly inclined. A V-shaped recess C is formed by the intersection of the outlines.

  As shown in FIGS. 1 and 2, two auxiliary ribs 57 having the same shape as the second rib 56 are provided at the rear of the second rib 56. Further, as shown in FIGS. 1 to 3, two reinforcing ribs 58 extending from the upstanding wall portion 54 b of the clip seat 54 to the side wall portion 53 on the windshield 20 side are provided. On the back surface of the front pillar trim 50, a plurality of reinforcing ribs 59 are provided over the substantially entire width of the front pillar trim 50 with a space between them.

Next, the operation and effects of the present embodiment will be described.
When the curtain airbag 80 is deployed, a deployment load F of the inflating curtain airbag 80 is applied to the side wall portion 52 of the front pillar trim 50, as shown in FIG. At this time, as shown in FIG. 4, a base wall 51 is formed with the line L passing through the V-shaped recess C formed by the outlines of the end portions 55a and 56a of the first and second ribs shown in FIG. Bends. The side wall portion 52 is disengaged from the lip portion 40a, an opening A is formed, and the curtain airbag 80 is deployed into the passenger compartment. At this time, the side wall 52 is pushed open without breaking the line L.
That is, when the side wall 52 is pushed open at the time of deployment of the curtain airbag 80, it is possible to control the line L passing through the recess C formed by the outlines of the end portions 55a, 56a of the first and second ribs as a break starting point. In particular, since the line L is clearly formed by the deepest portion of the V-shaped recess, reliable control of the break starting point is possible. Therefore, the air bag 80 can be smoothly deployed without the disadvantage that the clip seat 54 is broken and the front pillar trim 50 falls off due to instability of the folding start point.

  In addition, according to the front pillar trim 50 having the above configuration, when viewed from the longitudinal direction of the pillar trim 50, the terminal end 55a of the first rib and the terminal end 56a of the second rib overlap, so sufficient rigidity is obtained. Can hold the shock absorbing function.

The present invention is not limited to the above embodiment, and various modifications can be adopted without departing from the scope of the invention.
When viewed in the longitudinal direction of the front pillar trim, the shape of the recess formed by the intersection of the contours of the end of the first rib and the end of the second rib is not limited to the V shape, and may be U-shaped or other shapes. May be
Three or more first and second ribs may be provided.
In the above-mentioned embodiment, although the front pillar trim attached to the front pillar of the vehicle body was illustrated as an interior member for vehicles, the interior member for vehicles of the present invention is not limited to this, A roof attached to the roof side which is not illustrated The present invention may be applied to a side trim, a rear pillar trim attached to a rear pillar not shown, or the like.

  The present invention can be applied to a vehicle interior member that accommodates an air bag inside and is fixed to a vehicle body by a clip.

50 front pillar trim (interior member for vehicle)
51 base wall 52 side wall 53 side wall 54 clip seat 55 first rib 55a end of first rib 56 second rib 56a end of second rib 80 curtain airbag (air bag)
S space (internal space)
C recess

Claims (2)

A base wall portion and a pair of side wall portions have a U-shaped cross section, and a clip seat is formed on the base wall portion so as to project outward from the vehicle, and passes between the clip seat and one side wall portion in an internal space In a vehicle interior member in which an air bag is accommodated,
A plurality of first ribs extending from the clip seat toward the one side wall and having an end away from the one side wall;
A plurality of second ribs extending from the one side wall toward the clip seat and having an end away from the clip seat;
The first rib and the second rib are alternately arranged in the longitudinal direction of the interior member,
The end of the first rib has an inclined outline by gradually reducing the height from the base wall toward the one side wall,
The end of the second rib has an inclined contour by gradually reducing the height from the base wall toward the clip seat,
When viewed from the longitudinal direction of the interior member, the end of the first rib and the end of the second rib overlap, and the inclined contour of the overlapping end of the overlapping of the first rib and the second rib An interior member for a vehicle, wherein a recess is formed by intersection. The interior member for a vehicle according to claim 1, wherein the recess has a V shape.

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