JP3298567B2 - Shock absorbing structure on the upper part of the vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing structure for an upper portion of a vehicle body, and more particularly to a shock absorbing structure for an upper portion of a pillar portion of a vehicle body.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 7-117596 discloses a trim structure for an automobile in which a plurality of resin ribs are protrudingly provided on the outer side (back side) of a pillar garnish attached to a center pillar portion of the vehicle body (body). (An upper shock absorbing structure).

[0003]

In the trim structure disclosed in the above publication, although consideration is given to the shock absorption at the middle part of the pillar garnish, special consideration is given to the shock absorption at the upper end of the pillar garnish. Care has not been taken.

At the upper end of the pillar garnish, generally, a mounting boss (a portion to be attached to a body using a clip or the like) is integrally formed on the outside of the vehicle compartment, so that the same portion is provided on the vehicle interior side. When an impact load is applied from above, the integrally formed mounting boss portion may buckle and break, and then may bottom out and generate a high load, leaving room for improvement.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem, and has a mounting boss integrally formed at the upper end of a resin base material of a pillar garnish outside a vehicle cabin. At the same time, an energy absorbing rib extending obliquely upward toward the outside of the vehicle cabin is formed integrally with the mounting boss, and the upper end of the pillar garnish is fixed to the body using a clip attached to the mounting boss. There is a feature in doing.

In this case, the energy absorbing rib engages with an L-shaped plate on the body side that regulates the deployment direction of the head protection airbag bag body toward the interior of the vehicle at the time of a side collision. It is desirable to also serve as a mounting seat for mounting a movement restriction plate that restricts inward movement.

[0007]

In the shock absorbing structure of the upper part of the vehicle body according to the present invention, when an impact load acts on the upper end of the pillar garnish from the inside of the vehicle interior, the integrally formed mounting boss buckles and breaks, The energy absorption rib absorbs impact energy by bending deformation.
As a result, the bottoming load (peak load) during the shock absorbing action can be reduced.

Further, when the present invention is practiced, if the energy absorbing rib is configured to also serve as a mounting seat for the movement limiting plate, a bracket function can be added to the energy absorbing rib in addition to the original energy absorbing function. hand,
With a simple configuration, it is possible to alleviate the impact at the upper end of the pillar garnish and to prevent the pillar garnish from falling off when the head protection airbag bag is deployed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a view of the vehicle as viewed from the passenger compartment side. A front pillar garnish 10 is mounted on a front pillar portion of the vehicle body, a center pillar garnish 20 is mounted on a center pillar portion, and a quarter pillar portion is mounted on a quarter pillar portion. The pillar garnish 30 is assembled, and a roof head lining 40 is provided on the roof.
Has been assembled. In addition, each pillar garnish 1
The parts 0, 20, and 30 are assembled after the roof head lining 40 is assembled. As illustrated in FIG. 2, the corresponding portion (terminal) at the lower end of the roof head lining 40 is the pillar garnish 20. At the upper end.

[0010] Further, a head protection airbag body 51 which is deployed as shown by the imaginary line in FIG. 1 when deployed is folded on the front pillar portion and the roof side rail portion (specifically, at predetermined intervals). (Retained by a rupturable tape (not shown)), and is covered by a front pillar garnish 10 and a roof head lining 40 as shown by broken lines in FIG. The head-protecting airbag bag body 51 is designed to be deployed when gas ejected from the inflator 52 flows into the inside at the time of a side collision or rollover of the vehicle.

In this embodiment, as shown in detail in FIG. 2, the center pillar garnish 2
Reference numeral 0 denotes a resin base 21 and a skin 22. A mounting boss 21a is integrally formed on the upper end of the base 21 outside the vehicle compartment (back side), and is adjacent to the mounting boss 21a. Energy absorbing ribs 21b extending obliquely upward toward the outside of the vehicle cabin are integrally formed.
In addition, this center pillar garnish 20 includes FIG.
As shown in FIG. 2, a slide plate 24 for supporting a shoulder belt guide (slip joint) 23 for slidably supporting an intermediate portion of a seat belt (not shown) is assembled so as to be adjustable in position.

As shown in FIGS. 2 and 3, the mounting boss 21a has a support portion 21a1 having an arch-like shape, a distal end portion being longer in the vertical direction than the base end portion, and having a standing rib A inside. A support plate portion 2 having a holding hole B formed integrally with the tip of the support portion 21a1 to lock and hold the clip 61 and a slit C for enabling the clip 61 to be attached to and detached from the holding hole B.
1a2, and the clip 61 attached to the holding hole B of the support plate 21a2 is attached to the inner panel 71 of the body 70.
The upper end of the center pillar garnish 20 is fixed to the body 70 by fitting into the mounting hole 71 a provided in the body 70.

The energy absorbing rib 21b has a long shape in the front-rear direction as shown in FIG. 4 and FIG. 5, and when the center pillar garnish 20 is mounted on the center pillar portion, it is shown in FIG. Like, body 70
A predetermined gap L is formed between the inner panel 71 and the inner panel 71. In addition, the energy absorbing rib 21b
Is a pair of mounting holes 21 as shown in FIGS.
b1 (formed at the time of molding the base material 21), and the movement restricting plate 81 is assembled with the rivets 82 by using the mounting holes 21b1, whereby the energy absorbing rib 21b restricts the movement. It also serves as a mounting seat for mounting the plate 81.

The movement limiting plate 81 is an L-shaped plate 9
The upper part has two horizontally long engaging holes 81a that can be engaged with one engaging projection 91a, and has a vertically long notch 81b at the center. Protruding piece 2 indicated by line
1c is attached to the energy absorbing rib 21b in a state where it is cut off from the tip of the energy absorbing rib 21b. The protruding piece 21c is formed at the time of molding the base material 21, and has a cutout 21c1 formed at the base to facilitate cutting off.

When the body (center pillar) is deformed toward the interior of the vehicle at the time of a side collision, the clip 61 to which the center pillar garnish 20 is attached is disengaged. When the head protection airbag bag body 51 is inflated and deployed in the room, it may be caught on the upper end of the center pillar garnish 20 which has been lifted.

According to the movement restricting plate 81, when the clip 61 comes off at the time of a side collision and the upper end of the center pillar garnish 20 slightly moves into the vehicle interior, the movement restricting plate 81 attached to the center pillar garnish 20 is provided.
The engaging projections 91a of the L-shaped plate 91 are engaged with the engaging holes 81a of the L-shaped plate 91, and the movement of the upper end portion of the center pillar garnish 20 toward the vehicle interior is restricted. As a result, even if the center pillar is deformed toward the vehicle cabin side in the event of a side collision and the clip 61 comes off, the head protection airbag bag body 51 in the middle of inflation and deployment can be obtained.
Is prevented from being caught on the upper end of the center pillar garnish 20, and the head protection airbag bag body 51 can be reliably deployed between a predetermined vehicle side portion and an occupant side portion.

As shown in FIG. 8, the L-shaped plate 91 has a shape extending in the front-rear direction of the vehicle, and has two engagement projections which engage with the two engagement holes 81a of the movement limiting plate 81. 91a at the bottom and two mounting pieces 9 at the top
1b, and bolts (not shown) penetrate the mounting panel 51a and the mounting panel 51a of the head protection airbag bag body 51 and the mounting panel 51a of the mounting panel 91b. The inner panel 71 is assembled using a nut 72 previously welded to the vehicle exterior surface (back surface).

The L-shaped plate 91 has a mounting piece 91b.
And a guide wall extending from the lower end of the vertical wall portion provided with the upper portion of the center pillar garnish 20 toward the upper end of the center pillar garnish 20.
By restricting the deployment direction of the airbag 1 toward the interior of the vehicle, the center pillar garnish 2
0 is prevented from contacting or catching on the upper end, and normally holds the folded head protection airbag bag body 51 as shown in FIGS. 2, 7 and 8.

In this embodiment constructed as described above, when an impact load F acts on the upper end of the center pillar garnish 20 from the vehicle interior side as shown in FIG. The boss 21a buckles and breaks, and the energy absorbing rib 21b is bent and deformed, thereby absorbing impact energy. As a result, bottomed load (peak load) during shock absorption
Can be reduced as shown by the solid line in FIG. Note that the characteristic line indicated by the two-dot chain line in FIG. 9 is a case where the energy absorbing rib 21b is not formed on the base 21.

In this embodiment, since the energy absorbing rib 21b also serves as a mounting seat for the movement restricting plate 81, a bracket function can be added to the energy absorbing rib 21b in addition to the original energy absorbing function. Thus, with a simple configuration, the impact at the upper end of the center pillar garnish 20 can be reduced, and the center pillar garnish 20 can be prevented from falling off when the head protection airbag bag 51 is deployed.

In the above-described embodiment, an example has been described in which the present invention is applied to a vehicle in which the head-protecting airbag bag body 51 is assembled. In the embodiment, as shown in FIG. 10, the movement limiting plate 81 is not attached to the energy absorbing rib 21b, and the projecting piece 21c provided on the energy absorbing rib 21a of the center pillar garnish 20 is cut off. The substrate 21 is used as it is.

In this case, since the L-shaped plate 91 cannot be mounted on the inner panel 71, an energy absorbing material 92 as shown in FIG. It is also possible to implement the present invention, and the energy absorbing material 92 can be used to make the relevant portion into an impact absorbing structure. The energy absorbing material 92
It is made of resin and is composed of a base 92a for assembling to the inner panel 71, and a large number of ribs 92b extending obliquely upward from the base 92a toward the vehicle interior. Thereby, impact energy is absorbed. In addition, it is also possible to provide a member corresponding to the energy absorbing material 92 at a corresponding portion of the roof head lining 40 and carry out the operation.

[Brief description of the drawings]

FIG. 1 is a view of a vehicle as viewed from a vehicle interior side.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

FIG. 3 is a view of the mounting boss shown in FIG. 2 as viewed from outside the vehicle compartment.

4 is a perspective view of a center pillar garnish shown in FIG. 2 alone.

FIG. 5 is a diagram showing an upper end portion (to which a movement restriction plate is attached) of the center pillar garnish shown in FIG. 2;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 5;

FIG. 7 is a sectional view taken along line 7-7 in FIG. 5;

FIG. 8 shows a center pillar garnish shown in FIG.
It is a perspective view of a movement restriction plate, an L-shaped plate, a head protection airbag bag, etc.

9 is a characteristic diagram showing energy absorption characteristics in the shock absorbing structure shown in FIG.

10 is a diagram corresponding to FIG. 7 in a vehicle of a type that does not employ a head protection airbag bag.

FIG. 11 shows a vehicle of the type shown in FIG.
It is an expanded sectional view of the 11-11 line part.

[Explanation of symbols]

20: center pillar garnish, 21: base material, 21
a: mounting boss, 21b: energy absorbing rib, 51: head protection airbag bag, 61: clip, 70: body, 71: inner panel, 81: movement limiting plate,
81a: engagement hole, 91: L-shaped plate, 91a: engagement projection.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60R 13/02 B60R 21/22 F16B 5/06

Claims (2)

(57) [Claims] 1. A mounting boss is integrally formed at an upper end portion of a resin base material of a pillar garnish on an outer side of a vehicle interior, and an energy absorption extending obliquely upward toward an outer side of the vehicle adjacent to the mounting boss. A shock absorbing structure at an upper part of a vehicle body, wherein ribs are integrally formed so as to protrude, and upper ends of pillar garnishes are fixed to the body using clips attached to the mounting bosses. 2. The shock absorbing structure according to claim 1, wherein said energy absorbing rib is engaged with an L-shaped plate on a body side for restricting a deploying direction of a head protection airbag bag body toward a vehicle interior in a side collision. A shock absorbing structure at the upper part of the vehicle body, which also serves as a mounting seat for mounting a movement restriction plate for restricting movement of the pillar garnish toward the vehicle interior.