JPH11198748A - Impact absorbing pad mounting structure of pillar trim - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an impact absorbing pad mounting structure capable of mounting an impact absorbing pad easily and inexpensively by eliminating a hot melt-base adhesive in an impact absorbing pad mounting structure in which the impact absorbing pad is installed on the inner surface of a pillar trim. SOLUTION: A holding means to hold both side edge corner parts 40a and 40b of an impact absorbing pad 40 is provided on the inner surface both side edge parts of a center pillar trim lower part 10 and a buckling rib 12 is adopted for at least one of these holding means so as to make the impact absorbing characteristics of the impact absorbing pad 40 act effectively. Also a fixedly locking structure to fixedly lock the pad quickly is adopted instead of a conventional fixedly bonding structure using a hot melt base adhesive so as to increase a mounting workability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock-absorbing pad for a pillar trim in which a shock-absorbing pad is attached to a pillar trim to effectively absorb the shock when a vehicle is subjected to a side impact and to ensure occupant safety. Mounting structure.

[0002]

2. Description of the Related Art Conventionally, as a safety measure for a vehicle, when a shock is applied from the side of the vehicle, such as in a side collision, a shock absorbing pad is provided on the side wall panel and the side wall panel to effectively absorb the shock. Installed between the interior parts.

For example, a mounting structure of a shock absorbing pad installed on a center pillar provided in a side wall panel of a vehicle will be described as an example. As shown in FIG. A pillar trim lower 1 and a center pillar trim upper 2 are provided in the upper portion, respectively. The center pillar trim lower 1 and the center pillar trim upper 2 are each formed of an injection molded body of a synthetic resin such as a PP resin.

On the back side of the center pillar trim lower 1, a shock absorbing pad 3 made of a rigid polyurethane foam or the like is attached so as to correspond to the side collision area A. Normally, as shown in FIG. Lower 1
Mounting bosses 4 are provided at upper and lower portions of the rear surface of the shock absorbing pad 3, and mounting pieces 5 having mounting holes 5a are formed at upper and lower sides of the shock absorbing pad 3 so as to project outward. Adhesion and fixing with the system adhesive a is performed.

That is, as shown in FIG. 8, a hot-melt adhesive a is applied to the back surface of the center pillar lower 1 corresponding to the side collision area A, and the shock absorbing pad 3 is set on the applied surface. At this time, the mounting boss 4 of the center pillar lower 1 is attached to the mounting hole 5 a of the mounting piece 5 of the shock absorbing pad 3.
The shock-absorbing pad 3 is firmly attached to a predetermined position on the back surface of the center pillar lower 1 by flowing hot-melt adhesive a into the attachment hole 5a.

[0006]

However, in the conventional mounting structure of the shock absorbing pad 3, if a shock is applied from the side, the mounting boss 4 may be broken, resulting in a sharp edge. Therefore, considering safety,
The mounting boss 4 can be set only outside the side collision area A. Therefore, there are disadvantages in that the shock absorbing pad 3 becomes large, the material cost increases, and the weight increases.

Further, since the mounting boss 4 is set, sinks are apt to occur on the surface of the center pillar trim lower 1 and the appearance of the room is deteriorated, and the shock absorbing pad 3 is bonded to a predetermined portion of the back surface of the center pillar lower 1. Fixed,
In particular, since an expensive hot melt adhesive a is used,
Further, various problems have been pointed out, such as an increase in cost, an increase in the number of steps such as a step of applying the adhesive a and a step of drying, and an unfavorable working environment.

The present invention has been made in view of the above circumstances, and eliminates the use of a mounting boss for bonding and fixing in a shock absorbing pad mounting structure installed on the inner surface of a pillar trim provided in a side wall panel. As a result, the impact absorbing pad can be made more compact, reducing material costs,
In addition to being able to promote weight reduction, there is no appearance defect such as sink on the pillar trim surface,
Moreover, an object of the present invention is to provide a mounting structure of a shock absorbing pad in a pillar trim, in which an adhesive application step, a drying step, and the like can be eliminated, and the number of mounting steps can be significantly simplified.

[0009]

Means for Solving the Problems In order to achieve the above object, the invention according to claim 1 of the present application is directed to deforming the rear surface of a pillar trim inside a pillar panel of a vehicle by impact from a side. Alternatively, in a mounting structure of a shock absorbing pad in a pillar trim for mounting a shock absorbing pad capable of absorbing a shock by crushing, holding means for holding both side corners of the shock absorbing pad are provided on both inner side edges of the pillar trim, The shock absorbing pad is supported by the holding means while regulating in the X direction, and at least one side of the holding means is constituted by a buckling rib.

Further, in the invention according to claim 2 of the present application, the buckling rib supports the shock absorbing pad at the edge of the plate-shaped rib, and has a notch formed at the center thereof to allow deformation of the rib itself. The impact load is controlled by the thickness and the shape and size of the notch.

Further, the invention according to claim 3 of the present application is characterized in that the buckling rib is formed by connecting a plurality of plate-shaped ribs which easily buckle with a connecting plate.

Here, the pillar trim may be any pillar trim that is installed on a pillar panel on the side wall of the vehicle and is installed at a place where the occupant's body is easy to touch. In particular, a center pillar trim installed below the center pillar panel of the passenger car is used. Lowers are preferred.

The pillar trim is made of an injection-molded body made of a general-purpose synthetic resin such as a PP resin, and is mounted on a pillar panel through mounting means such as a resin clip or a metal clip based on a plurality of mounting points. Will be decorated.

On the other hand, the shock-absorbing pad is preferably a molded article such as a rigid polyurethane foam, and is attached to a predetermined location on the inner surface of the pillar trim in a state where the X-direction regulation is performed. The shock absorbing pad is supported by holding means provided on both side edges of the inner surface of the pillar trim, and at least one side of the holding means employs a buckling rib.

That is, both side edges of the shock absorbing pad may be held by left and right buckling ribs, and a locking claw is provided on one side and a buckling rib is formed on the other side, so that both sides can be used for impact. You may make it attach both sides of an absorption pad. The buckling rib preferably has a shape in which a shock absorbing pad is held at the edge of the plate-shaped rib and a notch is provided at the center to allow deformation, and in order to enhance rigidity, the plate-shaped buckling rib is preferably used. They may be connected by a connection plate.

As is apparent from the above configuration, a holding means for the shock absorbing pad is provided on both inner side edges of the pillar trim, and a buckling rib is employed on at least one side of the holding means. The adhesive fixing structure using the mounting boss can be eliminated, and the shape of the shock absorbing pad can be made compact without being restricted by the mounting boss.

In addition, since the shock absorbing pad is fixedly held by holding means employing buckling ribs on at least one side, the conventional hot-melt adhesive can be eliminated, and the hot-melt adhesive application step, drying step, etc. Can also be omitted.

Further, the holding means of the shock absorbing pad has an X-direction regulating function, so that the locating operation can be easily performed, and at least one side has a buckling rib structure. When a shock is applied from the outside, the buckling rib deforms or buckles simultaneously with the deformation and crushing action of the shock absorbing pad, so that external shocks can be effectively absorbed.

Further, by adjusting the shape of the buckling ribs, that is, the thickness of the plate and the width of the notch, it is possible to effectively control the impact load and to integrate the buckling ribs with each other by the connecting plate. The rigidity can be strengthened.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a mounting structure of a shock absorbing pad in a pillar trim according to the present invention will be described in detail with reference to the accompanying drawings.

1 to 5 show an embodiment in which the present invention is applied to an embodiment in which a shock absorbing pad is attached to a center pillar trim lower. FIG. 1 is an external view showing a center pillar trim, and FIG. 2 is a view of the center pillar trim lower in the center pillar trim. FIG. 3 is an explanatory view showing a state where an impact absorbing pad is attached to the center pillar trim lower, FIG. 4 is an explanatory view showing the impact absorbing function of the center pillar trim lower, and FIGS. 5 (a) and 5 (b). FIG. 2 is a perspective view showing a modified form of the buckling rib according to the present invention.

In FIG. 1 and FIG. 2, the center pillar trim is composed of an upper and lower divided body of a lower center pillar trim lower 10 and an upper center pillar trim upper 20, and the center pillar trim lower 10 and the center pillar trim upper 20 are separated from each other. It is molded into a required shape by injection molding of polypropylene resin.

An adjusting slot 21 is formed in the center of the center pillar trim upper 20, and the center pillar trim lower 10 and the center pillar trim upper 2 are provided.
An anchor plate 24 that supports the webbing 23 of the seat belt drawn out from the outlet 22 between 0 and 0 is provided in the adjustment slot 21 so as to be vertically movable. On the other hand, the center pillar trim lower 10 has a built-in seat belt retractor 25 at the base side, and the center pillar trim lower 10 is attached to a center pillar panel 30 via a clip (not shown). The shock absorbing structure described below is adopted because it is installed in a place where the body is easy to touch.

That is, according to the present invention, the impact absorbing pad 40 is provided on the inner surface of the side collision area A of the center pillar trim lower 10.
Is easy and inexpensive to install.
As shown in FIGS. 2 and 3, the shock absorbing pad 40 has a mounting curved surface 41 that matches the inner surface shape of the center pillar trim lower 10 and the center pillar panel 30.
A panel contact projection 42 is formed so as to protrude so as to face the surface. The shock absorbing pad 40 is formed of a molded article made of a hard polyurethane foam, and is bonded and fixed with a conventional hot melt adhesive. It is characterized by the adoption of an anchoring fixing structure with a shock absorbing function in place of.

That is, the center pillar trim lower 10
On both side edges on the inner surface side of the side collision area A, holding means for the shock absorbing pad 40 are formed.
1. A buckling rib 12 having an impact absorbing function is formed on the other side. In the present embodiment, the locking claw 11 has a triangular shape, and includes a guide inclined portion 11 a and a shock absorbing pad 40.
And an engaging portion 11b for locking the shock absorbing pad 40. However, the shape is not particularly limited as long as the function of locking the shock absorbing pad 40 is provided.

On the other hand, the buckling rib 12 has a configuration in which the edge 12a holds the shock absorbing pad 40 and a notch 13 is formed in the center, so that the buckling rib 12 can be easily buckled. I have.

The locking claw 11 and the buckling rib 12
Sets the shock absorbing pad 40 to the center pillar trim lower 10
When installed on the back surface of the vehicle, the shock absorbing pad 40 has an X direction restricting function for preventing a displacement in the X direction (vehicle width direction).

Next, in order to attach the shock absorbing pad 40 to a predetermined position on the inner surface of the center pillar trim lower 10,
With the one side edge corner portion 40a of the shock absorbing pad 40 locked on the inner surface side of the buckling rib 12, the shock absorbing pad 4
The other side edge corner portion 40b of the locking claw 11 is slid into the guiding inclined portion 11a of the locking claw 11 and pushed in.
And the shock absorbing pad 40 can be attached by a one-touch operation.

The buckling ribs 12 are provided on both sides of the side collision area A.
In this case, since the buckling rib 12 interferes with the mounting of the shock absorbing pad 40, the shock absorbing pad 4
The side corners 40a and 40b of the 0 may be elastically deformed and press-fitted. However, it is preferable that the corners 40a and 40b are slid along the inner surface of the center pillar trim lower 10.

As described above, according to the mounting structure of the shock absorbing pad 40 according to the present invention, the side edge corners 40a and 40b of the shock absorbing pad 40 are held by the holding means having the buckling rib 12 on at least one side. Therefore, compared with the conventional hot-melt adhesive using a mounting boss, the hot-melt adhesive is applied and applied.
It saves drying man-hours and eliminates the need for expensive hot-melt adhesives. It also prevents molding defects such as surface sink marks caused by mounting bosses, and has the advantage of obtaining good appearance and design. is there.

Further, the impact absorbing pad 40 can be made compact without restriction of the mounting boss, and the material cost can be reduced and the weight of the product can be reduced. Furthermore, when using an adhesive, a lot of work space is required for an adhesive application process, a drying process, and the like.
Although a facility for maintaining a good working environment such as a ventilation facility is required, according to the mounting structure of the shock absorbing pad 40 according to the present invention, the holding means having the buckling rib 12 on at least one side absorbs the shock. Because the pad 40 is held, the machine can be stopped with one touch, and the number of man-hours can be reduced.
It is also preferable in terms of working environment.

Next, the operation and effect of the shock absorbing function in the mounting structure of the shock absorbing pad 40 according to the present invention will be described with reference to FIG. 4. When a large load is applied to the vehicle from the side such as a side collision, the center pillar trim lower is provided. 10 receives the reaction force from the occupant and is pressed against the center pillar panel 30 with excessive force. At this time, the shock absorbing pad 40 is deformed and crushed, and at the same time, the buckling rib 12 is also connected to the joining flange 31 of the center pillar panel 30. The buckling rib 12 is deformed as shown in FIG.
Of the shock absorbing pad 40 is not hindered.

At this time, if the plate thickness of the buckling rib 12, the shape of the notch 13, the width, and the like are appropriately changed, the deformation of the buckling rib 12 with respect to the target impact load can be achieved.
There is an advantage that buckling can be effectively controlled.

The deformation of the buckling rib 12 is as follows.
As shown in FIGS. 5A and 5B, if the buckling ribs 12 are connected via the connection plate 14, the rigidity of the buckling ribs 12 can be enhanced, and the X direction regulation of the shock absorbing pad 40 can be achieved. And the connection plate 14 compensates for a decrease in rigidity that occurs when the shock absorbing structure is applied to the buckling ribs 12, so that the shock absorbing pad 40 can be held more stably.

The embodiment described above has a structure in which the shock absorbing pad 40 is attached to the inner surface of the center pillar trim lower 10. However, the present invention is not limited to the center pillar trim lower 10 but can be applied to various pillar trims. It does not deviate from the spirit.

[0036]

As described above, the mounting structure of the impact absorbing pad in the pillar trim according to the present invention has the following special effects.

(1) According to the first aspect of the present invention, since both side corners of the shock absorbing pad are engaged by the holding means formed on the rear edge of the pillar trim, the conventional mounting boss is used. Compared to the hot-melt adhesive bonding and fixing structure that uses, the application and drying steps of the hot-melt adhesive can be eliminated, and the shock-absorbing pad can be attached with one touch, which significantly improves the mounting workability. Having.

(2) According to the first aspect of the present invention, since the corners on both side edges of the shock absorbing pad are engaged by the holding means formed on the rear edge of the pillar trim, the conventional mounting boss is used. Can be abolished, and there is no surface sink mark or the like caused by the mounting boss, so that there is an effect that good appearance and design can be secured.

(3) According to the first aspect of the present invention, since both side corners of the shock absorbing pad are engaged by the holding means formed on the rear edge of the pillar trim, the mounting boss is restricted. The shock absorbing pad can be made more compact without being affected, and hot melt adhesives can be eliminated, material costs can be greatly reduced, costs can be reduced, and product weight can be reduced. It has the effect of being able to.

(4) According to the second aspect of the invention, the buckling rib provided on at least one side of the holding means has a notch formed in the center, and the rib thickness, the shape and size of the notch, and the like are determined. The variable adjustment has an effect that the impact load can be effectively controlled and effective measures for absorbing the impact can be taken.

(5) According to the third aspect of the present invention, since the buckling rib provided on at least one side of the holding means is connected by the connecting plate, the buckling rib employs an impact absorbing structure. The lowering of rigidity that occurs at the time can be compensated for by the connecting plate, and there is an effect that the shock absorbing pad can be securely mounted while maintaining good shock absorbing performance.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a center pillar trim to which a mounting structure of a shock absorbing pad according to the present invention is applied.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an exploded perspective view showing one embodiment of the mounting structure of the shock absorbing pad according to the present invention, showing a state where the shock absorbing pad is mounted on the inner surface of the center pillar trim lower.

FIG. 4 is an explanatory view showing one embodiment of the mounting structure of the shock absorbing pad according to the present invention, showing a state at the time of shock absorption.

FIG. 5 is a perspective view showing a modification of a buckling rib used in the mounting structure of the shock absorbing pad according to the present invention.

FIG. 6 is a front view showing a conventional center pillar trim.

FIG. 7 is an explanatory view showing a mounting structure of a conventional shock absorbing pad.

FIG. 8 is a sectional view showing a conventional shock absorbing pad mounting structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Center pillar trim lower 11 Locking claw 11a Guide inclined part 11b Engagement part 12 Buckling rib 13 Notch 14 Connecting plate 20 Center pillar trim upper 30 Center pillar panel 40 Shock absorption pad 41 Mounting curved surface 42 Panel contact convex part A Side collision area

Claims (3)

[Claims] An impact-absorbing pad (40) capable of absorbing an impact by being deformed or crushed by an impact from the side at a predetermined position on a back surface of a pillar trim (10) provided in a pillar panel (30) of a vehicle. In the mounting structure of the shock absorbing pad in the pillar trim to be mounted, holding means for holding both side corners (40a, 40b) of the shock absorbing pad (40) are provided on both inner side edges of the pillar trim (10). The shock absorbing pad (40) is supported by the means while regulating in the X direction, and at least one side of the holding means is constituted by a buckling rib (12). . 2. The buckling rib (12) supports the shock absorbing pad (40) at the edge (12a) of the plate-like rib, and has a notch (13) in the center to allow deformation of the rib (12) itself. Are formed, and the thickness and notch (1) of the rib (12) are formed.
2. The mounting structure of a shock absorbing pad in a pillar trim according to claim 1, wherein the impact load is controlled by the shape and size of (3). 3. The mounting of a shock absorbing pad on a pillar trim according to claim 1, wherein said buckling ribs (12) are formed by connecting a plurality of easily buckling plate-like ribs by connecting plates (14). Construction.