JP3354394B2 - Automotive interior parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile interior part such as an automobile door trim and a rear corner trim manufactured by using a mold press molding method as a method of molding a resin core material, and more particularly to a vehicle side part. The present invention relates to an automobile interior part which has excellent shock absorbing performance against an impact applied from the outside and has an improved appearance.

[0002]

2. Description of the Related Art Normally, door trims for automobiles are mounted on the interior side of door panels, and interior parts such as rear corner trims are mounted on body panels on the side of a rear occupant of a two-door vehicle, thereby improving the interior aesthetics. And a cushioning function for protecting the occupant against a side impact applied to the vehicle.

FIGS. 7 and 8 are a perspective view and a sectional view, respectively, showing an automobile door trim provided inside a door inner panel on the indoor side. The automobile door trim 1 includes a door trim main body 2 formed into a desired curved shape and a door trim main body 2. And a middle member 3 attached to a substantially central portion on the front side of the door trim main body 2.

[0004] The door trim body 2 is made of a resin core material 2 a having shape-retaining properties and rigidity for attachment to the vehicle body panel 4.
And a skin material 2b adhered to the surface of the resin core material 2a and having a cushioning property.
A material obtained by laminating an insulated pad 3b such as a polyurethane foam on the back surface of an insulated portion skin 3a such as a cloth having a different color and texture from the skin material 2b of the door trim body 2 is usually provided on the door trim body 2. Groove groove 5
By press-fitting the peripheral end 3c of the intermediate member 3 into the inside,
The terminal treatment of the insulated member 3 is performed to configure the door trim 1 having excellent appearance performance.

In recent years, the door trim 1 has been mass-produced by using a mold press molding method having excellent molding accuracy as a method of molding the door trim main body 2.

In the conventional door trim 1 for automobiles, a spacer pad 6 such as a polystyrene foam is adhered and fixed to a resin core material 2a of the door trim main body 2 at an appropriate position, so that a relatively small external force from the side is applied. On the other hand,
The impact load is relieved by the elastic action of the skin material 2b of the door trim body 2 or the insulated portion pad 3b of the insulated member 3, and a relatively large impact from the side is provided by the spacer pad 6 The shock is absorbed.

However, the shock absorbing performance of the spacer pad 6 is difficult to secure a stable shock absorbing function for a long period of time, for example, the pad function is affected by deterioration of the pad due to aging or the clearance with the vehicle body panel. Recently, the work of bonding and fixing the spacer pad 6 to the rear surface of the door trim main body 2 is troublesome.
There is a tendency that the door trim 1 itself breaks in response to a large impact from the side, thereby reducing the impact.

That is, when an impact is applied from the side, the resin core 2a in the impact area A indicated by the dotted line in FIG. Grooves 7 are provided, with the concave groove 7 serving as a base point for promoting the breakage of the resin core material 2a and effectively absorbing external impact.

[0009]

As described above, the conventional vehicle door trim 1 employs a configuration in which the concave groove 7 is formed on the back surface of the resin core material 2a in the impact area A. It has been pointed out that sinks tend to occur on the surface side of the concave groove 7 and the appearance is significantly reduced.

Furthermore, when the concave groove 7 is set, the load on the entire impact area A cannot be reduced, and there is a drawback that it is not an effective measure.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and is intended for an automobile having an insulated member mounted on a trim body using a resin core material formed into a desired curved shape by mold press molding. In interior parts, when a shock from the side is applied, it easily induces the break of the trim body,
It is an object of the present invention to provide an automobile interior part which can effectively absorb a side impact, does not cause sink marks on the product surface, and has an improved appearance.

[0012]

In order to achieve the above-mentioned object, the present invention provides a trim press body having a resin core material and a skin material formed into a required shape by a mold press molding die. A part of the interior member is fitted with a middle member, and a peripheral end of the middle member is pressed into a wood grain groove formed in the trim body. While the groove for the set is set, the thickness of the resin core material in the impact area excluding the wood grain groove is thinner than the thickness of the resin core material of the general part,
Together the impact load of the side collision is concentrated along the Kimekomi groove of the peripheral edge and the impact area of the impact area
When the impact is applied to the entire impact area
It is characterized in that a board thickness boundary portion that can induce breakage is set .

The resin core material constituting the trim main body is formed by molding a polypropylene resin or an ABS resin mixed with a filler such as talc into a required shape by a mold press molding die.

Further, the skin material constituting the trim main body is made of polypropylene foam,
A laminated sheet material lined with a foam layer such as polyethylene foam is used, and is integrated during mold press molding of the resin core material.

Further, as the insulated member, an insulated pad such as polyurethane foam is provided on the back surface of the insulated portion such as a cloth having a different surface feeling and feel from the top layer of the skin material of the trim body. A laminated sheet material having excellent backing feel and cushioning properties is used, and is fixed to a predetermined portion of the surface of the trim main body by a crimping die or the like with respect to a trim main body molded and pressed into a required shape.

In the impact area, a wood grain groove is set, and in this impact area, the thickness of the wood grain groove is almost the same as the thickness of the general part of the resin core material, ie, 3.0 to 3.5 mm. However, the thickness of the other resin core material in the impact area except for the groove for graining was set to be thinner by about 1 mm.
It is set to 〜2.5 mm.

Furthermore, a feature is that a plurality of concave grooves are formed in the side wall flange portion connected to the impact area.

As is apparent from the above configuration, the resin core material in the impact area is set to be thin, and the thickness of the resin core material in the groove for the wood grain in the impact area is not reduced. thickness variation and of the resin core member between the groove and the other portions for Kimekomi in by change in thickness of the resin core member along the impact area periphery side collision or the like, the boundary portion of the impact load of the resin core member thickness ( Grooves and impactors in the impact area
(The periphery of the impact area ) , and it is possible to easily induce the breakage of the resin core material in the entire impact area.

Further, no sink marks are formed on the surface of the product along the boundary of the thickness of the resin core material, so that the appearance and design are not degraded.

Further, even if a concave groove is set in the side wall flange,
Even if sinks occur on the surface side along the concave grooves, the mating parts cover the side wall flange surface, so that the indoor aesthetic appearance is not adversely affected.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a vehicle interior part according to an embodiment of the present invention.

FIG. 1 is a perspective view showing an automobile door trim according to an embodiment of the present invention. FIGS. 2 and 3 are longitudinal sectional views and transverse sectional views showing the structure of the automobile door trim. FIG. Perspective view of the main part of the door trim viewed from the back side, FIG.
FIG. 6 is a perspective view of a vehicle door trim showing another embodiment of the present invention as viewed from the back side, and FIG. 6 is a perspective view showing a main part of the vehicle door trim shown in FIG.

First, in FIGS. 1 and 2, an automobile door trim 10 includes a door trim main body 20 formed into a required shape by mold press molding, and an intermediate member 30 attached to a substantially central portion of the surface of the door trim main body 20. The door trim main body 20 is configured by integrally attaching a skin material 22 having decorativeness and cushioning property to a surface of a resin core material 21 having shape retention and rigidity for attachment to a vehicle body panel. Have been.

More specifically, the resin core material 21 is made of a polypropylene resin mixed with talc, and is formed into a required shape by a mold press molding die described later.
As the skin material 22, a laminated sheet having a good cushioning property, in which a foam layer such as a polypropylene foam is lined on the back surface of a top layer such as a polyvinyl chloride sheet, is used. Be worn.

On the other hand, the inscribed member 30 is
The skin material 22 of 0 is preferably a material having a different feeling and feel. In the present embodiment, a material in which a middle pad 32 of polyurethane foam or the like is lined with a back surface of a middle skin 31 of cloth or the like is used. The inscribed member 30 is integrated with a predetermined portion of the surface of the door trim main body 20 via an adhesive by a crimping die (not shown).
0 in the groove 23 for wood grain formed in
The 0 peripheral terminal 33 is subjected to the graining process, and the terminal process of the inscribed member 30 is performed.

The door trim 10 is attached to the door inner panel 40 via a clip (not shown) or the like.
A spacer pad 50 having a shock absorbing function, such as a polystyrene foam, is fixed to a predetermined portion of the back surface of the resin core 21.

The feature of the present invention is that when a relatively large impact is applied to the vehicle from the side, such as a side collision, the impact load is effectively absorbed and the occupant is reliably protected. Even if the absorbing means is installed on the door trim 10,
There is no sink mark on the product surface, and the appearance and design are enhanced.

That is, in the impact area A shown by the dotted line in FIG. 1, the wood grain groove 23 is set, and the impact area A excluding the wood grain groove 23 is set.
The thickness of the resin core material 21a is set to 2.0 to 2.5 mm, and the wood grain groove 2 in the impact area A is set.
The thickness of 3 is the same as the thickness of the resin core material 21 of the general part.
It is set to 0 to 3.5 mm.

Accordingly, in the impact area A, the impact load from the outside concentrates on the resin core material 21 along the boundary 24 between the thin portion 21a and the general portion 21 including the wood grain groove 23. A break is induced along the stress concentration portion over the entire impact area A, and external impact can be effectively absorbed.

Further, on the surface side of the door trim main body 20, almost no sink marks are formed on the surface of the boundary portion 24 between the thin portion 21a in which the thickness of the resin core material 21 is set to be thin and the general portion 21, so that the appearance design is poor. This is remarkably improved as compared with the conventional case where the concave groove 7 is formed.

That is, Table 1 shows a comparison between the product of the present invention and the conventional example.

[0032]

[Table 1]

Then, the thin portion 21 is placed in the impact area A.
The product of the present invention in which a is set is superior in the product appearance as compared with the conventional example in which the concave groove 7 is formed in the impact area A, and the present invention is also superior in the shock absorbing function for the above-described reason. This is clear from Table 1.

Next, FIGS. 5 and 6 show another embodiment of the present invention, in which the embodiment is similarly applied to the door trim 10. FIG.

The same components as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, as shown in FIG. 5, a grained groove 23 is set in the impact area A, and the impact area A excluding the grained groove 23 is set.
The thickness of the resin core material 21 is set to the thin portion 21a, and a plurality of concave grooves 25 are formed in the side wall flange 11 of the door trim 10 at a predetermined pitch so as to be connected to the impact area A.

Therefore, in the present embodiment, the side wall flange 11, which is relatively stiff, is configured to be easily broken by the concave groove 25, and the concave groove 25 acts as a base point of the break, thereby effectively absorbing the shock. As shown in FIG. 6, the side wall flange 11 is normally covered with the center pillar garnish 60. Therefore, even if a sink occurs on the surface of the side wall flange 11, it is almost It is inconspicuous and does not reduce indoor aesthetics.

The above embodiment is applied to the door trim 10 for an automobile.
It can be effectively applied to interior parts to be installed on the side wall of the vehicle body.

[0039]

As described above, the present invention has the following special functions and effects.

(1) According to the present invention, a wood grain groove is set in the impact area of an interior part, and the resin core material in the impact area excluding the wood grain groove is set to be thin, so that the vehicle can be made thinner. When an impact is applied from the side, the impact can be concentrated along the boundary of the thickness of the resin core material in the impact area, causing breakage over the entire impact area and effectively absorbing the impact This has the effect of significantly reducing the impact applied to the occupant.

(2) According to the present invention, a wood grain groove is set in an impact area of an interior part, and a resin core material excluding the wood grain groove in the impact area is set to be thin. When an impact is applied from the side, it is possible to concentrate the impact along the boundary of the thickness of the resin core in the impact area, induce breakage over the entire impact area, and effectively absorb the impact The structure effectively reduces the impact applied to the occupant, so compared to the conventional safety measures for one side of the spacer pad, the number of places to set the spacer pad can be reduced, the man-hour for mounting the pad can be reduced, and it can greatly contribute to cost reduction. Has an effect.

(3) According to the present invention, a wood grain groove is set in the impact area of an interior part, and the resin core material in the impact area excluding the wood grain groove is set to be thin, so that the vehicle can be used in a vehicle. When an impact is applied from the side, it is possible to concentrate the impact along the boundary of the thickness of the resin core in the impact area, induce breakage over the entire impact area, and effectively absorb the impact In addition, since the configuration is such that the impact applied to the occupant is effectively mitigated, there is an effect that, as compared with the conventional concave groove configuration, sink is not generated on the product surface, and excellent appearance and design can be secured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an automobile door trim according to an embodiment of the present invention.

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

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a perspective view of the automobile door trim shown in FIG. 1 as viewed from the back side.

FIG. 5 is a perspective view of another embodiment of the door trim for an automobile according to the present invention as viewed from the back surface side.

FIG. 6 is a partial perspective view showing a main part of the vehicle door trim of FIG. 5;

FIG. 7 is a perspective view showing a conventional automobile door trim.

FIG. 8 is a longitudinal sectional view showing a configuration of a conventional automobile door trim.

FIG. 9 is a sectional view taken along line IX-IX in FIG. 7;

FIG. 10 is a perspective view of a conventional automobile door trim as viewed from the back side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Automotive door trim 11 Side wall flange 20 Door trim main body 21 Resin core material 22 Skin material 23 Groove for wood grain 24 Boundary part 25 Concave groove 30 Inner member A Impact area

────────────────────────────────────────────────── (5) References JP-A-8-85342 (JP, A) JP-A-6-270680 (JP, A) JP-A-6-270176 (JP, A) (58) Field (Int. Cl. ⁷ , DB name) B60R 13/02 B60J 5/00

Claims (1)

(57) [Claims] An intermediate member (30) is formed at a substantially central portion of the surface of a trim body (20) formed by molding a resin core material (21) and a skin material (22) into a required shape by a mold press molding die. ) Is mounted, and a peripheral end (33) of the insulated member (30) is press-fitted into a wood groove (23) formed in the trim body (20). In the impact area (A) at the time of the side collision, a wood grain groove (23) is set in the impact area (A), and the thickness of the resin core material (21a) in the impact area (A) excluding the wood grain groove (23). Is thinner than the thickness of the resin core material (21) of the general part, so that the side impact occurs along the periphery of the impact area (A) and the wood grain groove (23) in the impact area (A). Opposition Along with the load is concentrated, impact is applied
Rupture is induced over the entire impact area (A)
An interior part for an automobile, wherein a thickness boundary portion is set .