JP6602831B2 - Interior parts for vehicles - Google Patents

Description

  The present invention relates to a vehicle interior member, and more particularly, to a vehicle interior member that accommodates an airbag therein and is attached to a vehicle body by a clip.

  The pillar and the roof side interior member that may collide with a passenger's head at the time of a vehicle collision are required to have sufficient rigidity to alleviate the impact on the head. Therefore, a resin rib is provided as an impact absorbing structure inside the interior member. The resin ribs alleviate the impact applied to the head by deformation or brittle fracture.

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

  When an impact load is applied to the vehicle body from the side, the curtain airbag is inflated by supplying gas from the inflator, and the inflation pressure causes the side edge of the roof trim and the front pillar trim that continues to the side edge. The side edges are pushed open and deployed along the inner surface of the windshield and pillar to protect the occupant.

  The interior member disclosed in FIG. 3 of Patent Document 1 is a pillar trim disposed on the passenger compartment side of the front pillar, has a base wall portion and a pair of side wall portions, has a U-shaped cross section, and has a base wall portion. A clip seat is formed to protrude outward from the vehicle. A curtain airbag is accommodated in the interior space of the pillar trim, and is disposed between the clip seat and one side wall portion.

  An impact absorbing member composed of vertical ribs and horizontal ribs is disposed on the base wall portion of the pillar trim. Of the bottom surface of the shock absorbing member, a portion far from the airbag is attached to the base wall portion, and the end portion on the airbag side of the attachment surface is a folding start point when one side wall portion is pushed open by the airbag (hinge ). When the airbag is deployed, one side wall portion is pushed open toward the passenger compartment with reference to the folding start point. Therefore, stable airbag deployment is possible without causing breakage or the like of the clip seat. However, the rigidity at a portion where there is no impact absorbing member such as a side wall portion inevitably decreases, resulting in a decrease in the impact relaxation function.

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

JP 2003-226216 A Japanese Patent Laying-Open No. 2015-137044

  The pillar trim shown in FIG. 3 of Patent Document 2 has a plurality of ribs extending continuously from the clip seat over the one side wall portion, and therefore when the one side wall portion is pushed open when the airbag is deployed, the folding start point is not fixed. The airbag deployment was not stable. For this reason, before the side wall portion is pushed open, the clip seat is broken and the pillar trim is dropped.

In order to solve the above-described problems, the vehicle interior member of the present invention has a base wall portion and a pair of side wall portions, and has a U-shaped cross section. A clip seat is formed on the base wall portion so as to protrude outward from the vehicle, and an airbag 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 portion, and has a plurality of first ribs having terminal portions separated from the one side wall portion, and the one side wall portion toward the clip seat. And a plurality of second ribs having end portions separated from the clip seat.
The first ribs and the second ribs are alternately arranged in the longitudinal direction of the interior member. The terminal portion of the first rib has an inclined contour line as the height from the base wall portion is gradually reduced toward the one side wall portion. The terminal portion of the second rib has an inclined contour line as the height from the base wall portion is gradually reduced toward the clip seat.
When viewed from the longitudinal direction of the interior member, the terminal end of the first rib and the terminal end of the second rib overlap each other, and the inclined contour line of the terminal end overlapping the first rib and the second rib overlaps. A recess is formed by the intersection.

  According to the above configuration, when viewed from the longitudinal direction of the interior member, since the terminal end of the first rib and the terminal end of the second rib overlap each other, sufficient rigidity can be obtained and an impact mitigating function can be maintained. . When one side wall is pushed open when the airbag is deployed, the base wall is bent starting from the line passing through the recess formed by the contour lines of the end portions of the first and second ribs, so that a smooth airbag Deployment is possible.

Preferably, the recess is V-shaped.
According to the above configuration, the line at which the base end portion bends when the airbag is deployed is more clearly formed by the deepest portion of the V-shaped recess, so that the folding start point can be reliably controlled.

  According to the present invention, it is possible to smoothly deploy the airbag by controlling the starting point of the folding when the airbag is deployed while ensuring sufficient rigidity to maintain the impact mitigating 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 outside. It is sectional drawing which follows the III-III line of FIG. It is sectional drawing similar to FIG. 3 of the same pillar trim, Comprising: The pillar trim receives the pressing force at the time of airbag deployment, and shows the state by which the side wall part was pushed open.

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

  As shown in FIG. 3, a windshield 20 is attached to the front end portion of the front pillar 10, and a front door 30 is attached to the rear end portion so as to be openable and closable. The front pillar 10 has a closed cross-sectional structure by an inner panel 11 on the passenger compartment side and an outer panel 12 on the outer side of the vehicle, and the interior is partitioned by a reinforcing panel 13. A rear flange portion 10 a is formed by the rear flange portion of the inner panel 11 and the rear flange portion of the outer panel 12. An opening weather strip 40 that is a seal member of 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 an interior member for a vehicle according to the present invention, and is integrated into a shape that can cover the front pillar 10 by injection molding a resin such as polypropylene (PP). 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 to the outside of the vehicle. As shown in FIG. 2, the clip seat 54 includes a pair of standing wall portions 54 a and 54 b extending from the base wall portion 51 to the vehicle outer side, a pedestal portion 54 c that connects tip ends of the standing wall portions 54 a and 54 b, and a standing wall. It has the connection wall part 54d which connects the edge part of the vehicle length direction front side of part 54a, 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 of the clip 60 into the clip hole 54f of the pedestal portion 54c. The other end of the clip 60 is fitted into 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 (perpendicular to the paper surface of FIG. 3), and two legs (not shown) of the bracket 70 are fixed to the inner panel 11 by welding. Thereby, the front pillar trim 50 is attached to the front pillar 10 and covers the vehicle interior side of the front pillar 10. The side wall portion 52 on the opposite side of the front glass 20 in the front pillar trim 50 is elastically supported by the lip portion 40 a of the opening weather strip 40.

  A space 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 at the upper end portion of the front pillar 10 and is accommodated in the space S. In the space 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 standing wall portion 54a toward the side wall portion 52 on the opening weather strip 40 side are provided on the clip seat 54 at the upper end portion on the back surface (vehicle outer surface) of the front pillar trim 50. Yes. As shown in FIG. 3, the end portion 55 a of the first rib 55 is located on the base wall portion 51 closer to the standing wall portion 54 a than the middle between the standing wall portion 54 a and the end edge of the side wall portion 52. The height from the base wall part 51 is gradually reduced from the standing wall part 54a side to the terminal part 55a, and the 1st rib 55 has the inclined outline. In particular, in the terminal part 55a, the height from the base wall part 51 is linearly reduced.

  Further, on the back surface of the front pillar trim 50, two second ribs 56 extending from the side wall portion 52 toward the clip seat 54 at the upper end portion are provided. As shown in FIG. 3, the end portion 56 a of the second rib 56 is located on the base wall portion 51 closer to the standing wall portion 54 a than the middle between the standing wall portion 54 a of the clip seat 54 and the edge of the side wall portion 52. Yes. The height from the base wall part 51 is gradually reduced from the side wall part 52 side to the terminal part 56a, and the 2nd rib 56 has the 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 portion 55a of the first rib 55 and the end portion 56a of the second rib 56 overlap each other, and the end portions 55a and 56a are inclined linearly. A V-shaped recess C is formed by the intersection of the contour lines.

  As shown in FIGS. 1 and 2, two auxiliary ribs 57 having the same shape as the second ribs 56 are provided behind the second ribs 56. Moreover, as shown in FIGS. 1-3, the two reinforcement ribs 58 extended from the standing wall part 54b of the clip seat 54 to the side wall part 53 by the side of the windshield 20 are provided. On the back surface of the front pillar trim 50, a plurality of reinforcing ribs 59 are provided over almost the entire width of the front pillar trim 50 at intervals in the vertical direction.

Next, the operation and effect of this 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 52 of the front pillar trim 50 as shown in FIG. At this time, as shown in FIG. 4, the base wall 51 is formed with a line L passing through the V-shaped recess C formed by the contour lines of the end portions 55a and 56a of the first and second ribs shown in FIG. Bends. The side wall 52 is removed from the lip 40a, an opening A is formed, and the curtain airbag 80 is deployed in the vehicle interior. 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 when the curtain airbag 80 is deployed, the line L passing through the recess C formed by the contour lines of the terminal portions 55a and 56a of the first and second ribs can be controlled as the folding start point. In particular, since the line L is clearly formed by the deepest portion of the V-shaped concave portion, the folding start point can be reliably controlled. Therefore, it is possible to avoid the inconvenience that the clip seat 54 is damaged due to unstable folding start points and the front pillar trim 50 falls off, and the airbag 80 can be deployed smoothly.

  According to the front pillar trim 50 having the above configuration, when viewed from the longitudinal direction of the pillar trim 50, the end portion 55a of the first rib and the end portion 56a of the second rib overlap each other, so that sufficient rigidity is obtained. And can retain the impact mitigation function.

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.
When viewed from the longitudinal direction of the front pillar trim, the shape of the recess formed by the intersection of the contour line of the end portion of the first rib and the end portion of the second rib is not limited to the V shape, and may be a U shape or other shapes. May be.
Three or more first ribs and two second ribs may be provided.
In the above embodiment, the front pillar trim attached to the front pillar of the vehicle body is exemplified as the vehicle interior member, but the vehicle interior member of the present invention is not limited to this, and the roof attached to the roof side (not shown). You may apply 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 an interior member for a vehicle that accommodates an airbag therein and is fixed to a vehicle body by a clip.

50 Front pillar trim (vehicle interior parts)
51 Base Wall Part 52 Side Wall Part 53 Side Wall Part 54 Clip Seat 55 First Rib 55a End Part of the First Rib 56 Second Rib 56a End Part of the Second Rib 80 Curtain Airbag (Airbag)
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. A clip seat projects from the base wall portion to the outside of the vehicle and passes between the clip seat and one side wall portion in an internal space. In the vehicle interior member in which the airbag is accommodated,
A plurality of first ribs extending from the clip seat toward the one side wall portion and having a terminal portion separated from the one side wall portion;
A plurality of second ribs extending from the one side wall portion toward the clip seat and having a terminal portion separated from the clip seat;
The first ribs and the second ribs are alternately arranged in the longitudinal direction of the interior member,
The end portion of the first rib has an inclined contour line by gradually reducing the height from the base wall portion toward the one side wall portion,
The end portion of the second rib has an inclined contour line by gradually reducing the height from the base wall portion toward the clip seat,
When viewed from the longitudinal direction of the interior member, the terminal end of the first rib and the terminal end of the second rib overlap each other, and the inclined contour line of the terminal end overlapping the first rib and the second rib overlaps. A vehicle interior member characterized in that a recess is formed by the intersection. The vehicle interior member according to claim 1, wherein the concave portion has a V shape.

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