JPH1024775A - Automotive interior parts - Google Patents

Abstract

(57) [Summary] [PROBLEMS] An automotive interior part formed by integrally molding a resin core material and a skin material by a mold press molding method,
It is an object to provide a good shock absorbing function against side impacts such as side collisions without impairing the appearance design. SOLUTION: An interior part 10 obtained by integrally molding a resin core material 20 and a skin material 30 by a mold press molding die.
At the time of the side collision, the resin core material 2 of the general part is provided on the back surface of the resin core material 20 of the outverse part B provided in the impact area A at the time of the side collision.
By providing the concave groove 23 having a thickness smaller than 0, an impact load against the impact from the side is concentrated on the concave groove 23, and the fracture of the resin core material 20 is easily induced. Attention is paid to the fact that the skin material 30 in the outverse portion B is stretched into a thin shape at the time of the mold press molding of the surface material 30 and the skin material 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to interior parts for automobiles such as door trims and rear corner trims for automobiles, which are formed by integrally molding a resin core material and a skin material by a mold press molding method. The present invention relates to an automobile interior part having excellent shock absorbing performance against an impact applied from the side of a vehicle without damage.

[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 rear passengers of two-door vehicles.
It has a cushioning function to improve the interior aesthetics and to protect the occupants against side impacts on the vehicle.

FIG. 8 to FIG. 10 show an automobile door trim installed inside a door inner panel on the indoor side, FIG. 8 is an external view of the door trim, FIG. 9 is a sectional view of the door trim,
FIG. 10 is a perspective view of the door trim as viewed from the back side.

The automobile door trim 1 has a resin core material 2 having shape retention and rigidity for mounting to a door inner panel, and is adhered to the surface of the resin core material 2 to have good cushioning properties and decorative properties. And a skin material 3.

By the way, as a recent tendency, from the viewpoint of protection of the occupant, a shock absorbing function for effectively protecting the occupant against a relatively large impact from the side applied to the vehicle such as a side collision is installed in the door trim 1. Is the mainstream.

[0006] In particular, in a portion where impact is likely to be applied to the occupant from outside such as a side collision (a portion surrounded by a dotted line in FIGS. 8 and 10) (hereinafter referred to as an impact area A), A groove portion 2a (groove portion for performing a peripheral edge treatment of the inscribed member) is provided, and the rigidity is enhanced by the groove portion 2a. As shown in FIGS. 9 and 10, the resin core material 2
A concave groove 4 is formed on the back surface of the resin core 2, and the fracture of the resin core material 2 is promoted based on the concave groove 4 to effectively absorb an impact load.

[0007]

However, in the conventional automobile door trim 1, the impact area A
The groove 4 is formed on the back surface of the resin core material 2 in the inside, but it has been pointed out that a sink is easily generated on the surface side of the groove 4 and the appearance is significantly reduced.

Further, since the impact area A is set on a flat surface on the surface side of the product, when an impact from the side such as a side collision is applied, the load is unlikely to concentrate.
It was hard to say that a satisfactory shock absorbing function could be secured.

The present invention has been made in view of such circumstances, and impairs the appearance and design of an automotive interior part obtained by integrally molding a resin core material and a skin material with a mold press molding die. It is an object of the present invention to provide an automobile interior part having an excellent shock absorbing function against a side impact applied to a vehicle such as a side collision without side impact.

[0010]

Means for Solving the Problems To achieve the above object, the present invention relates to an automobile interior part obtained by integrally molding a resin core material and a skin material into a required shape by using a mold press molding die. In the event of a side collision, an outer part is provided in the impact area of the interior parts where external force is applied intensively, and a concave groove that is thinner than the resin core material of the general part is formed on the back of the resin core material of this outverse part It is characterized by having.

The resin core material 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.

The skin material to be adhered to the front surface side of the resin core material is a laminated sheet material in which a foam layer such as a polypropylene foam or a polyethylene foam is lined on the back surface of a top layer made of a synthetic resin sheet such as a PVC sheet. Then, the resin core material is integrally adhered to the surface of the resin core material during mold press molding.

Next, the concave groove set in the impact area is provided on the back surface of the resin core material in the outverse portion of the product, and the outverse portion is formed at the boundary between the product surface portion and the side wall flange portion. An outverse portion may be provided as a ridge that bulges toward the inside of the vehicle cabin at a corner portion along the surface or on a substantially flat product surface portion.

Further, the shape of the concave groove may be arbitrarily set, such as a substantially trapezoidal cross section, a V-shaped cross section, or the like.
When the thickness of the general portion of the resin core material is set to about 2.5 mm, the depth of the concave groove is set to 2 mm.

As is apparent from the above configuration, since a concave groove having a smaller thickness than the resin core material of the general portion is formed on the back surface of the resin core material at the outverse portion in the impact area of the product, the side collision occurs. For example, when a relatively large impact is applied to the vehicle from the side, an impact load tends to concentrate on the concave groove, and the resin core material breaks with the concave groove as a base point, so that the impact can be effectively absorbed.

Further, when the skin material is adhered to the surface of the resin core material, the skin material in the outverse portion is stretched. Therefore, when a concave groove is set on the back surface of the resin core material, sink occurs in the outverse portion. Nor does it stand out from the outside.

[0017]

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 an external view showing an automobile door trim according to an embodiment of the present invention, FIG. 2 is a cross-sectional view showing a main part of the automobile door trim, and FIG. 3 is a rear view of the automobile door trim. FIG. 4 is a cross-sectional view showing a modified embodiment of the automobile door trim, FIGS. 5 to 7 show another embodiment of the present invention, FIG. 5 is an external view of the automobile door trim, and FIG. FIG. 7 is a cross-sectional view showing a configuration of a main part of the door trim for an automobile, and FIG. 7 is a perspective view of the door trim for the automobile as viewed from the back side.

1 to 3, an automobile door trim 10 is provided with a skin material 30 having good decorativeness and cushioning properties on the surface of a resin core material 20 having shape retention and rigidity for mounting to a vehicle body panel. It is configured by sticking together.

More specifically, the resin core material 20 is made of a polypropylene resin mixed with talc, is formed into a required shape by a mold press mold, and the skin material 30 is a back surface of a top layer such as a PVC sheet. A laminated sheet having a good cushioning property, which is backed with a foam layer such as polypropylene foam, is integrally adhered to the surface of the resin core material 20 during mold press molding.

As shown in FIG. 3, the door trim 10
A clip (not shown) is mounted on a clip mounting seat 21 provided at an appropriate interval along the back side peripheral edge of the resin core material 20, and is mounted on the vehicle body panel via the clip.

A feature of the present invention is that a good shock absorbing function is provided when a shock is applied to the vehicle from the side without impairing the appearance design of the door trim 10 for a vehicle.

That is, when an impact is applied from the side of the vehicle such as a side collision, the impact area A where the occupant's body is easy to touch.
Inside, a wood grain groove 22 (groove graining the peripheral edge of the insulated member (not shown)) is formed, so that the wood grain groove 22 enhances the rigidity and the resin core material 20.
However, in the present invention, in order to easily induce breakage of the resin core material 20 in the impact area A, the product surface portion 11 and the side wall flange portion 12 of the door trim 10 are formed. Paying attention to the fact that the corner portion 13 along the boundary line between the outer core and the outer core is in the outverse state, a feature is that a concave groove 23 is set on the back surface of the resin core material 20 in the outverse portion B.

Therefore, when an impact is applied from the side, the impact load concentrates on the corner portion 13, ie, the outverse portion B, and the concave groove 23, which is thinner than the resin core material 20 of the general portion, is concentrated on this portion. Is set, this concave groove 2
With reference to 3, the breakage of the resin core material 20 is easily induced.

Furthermore, when the resin core material 20 and the skin material 30 are integrally formed by mold press molding, the skin material 30 is stretched and thinned in the outer portion B, so that sink occurs when the resin core material 20 is formed. However, since the skin material 30 corresponding to this portion is thinly stretched, sink marks are not conspicuous to the outside, and the appearance and design are not impaired at all.

It is effective to set the concave groove 23 substantially parallel to the setting line of the wood grain groove 22 so that the resin core material 20 can be easily broken.

As described above, the door trim 10 for an automobile according to the present invention has the resin core material 2 in the impact area A.
When forming a concave groove 23 having a shock absorbing function on the back surface of
A groove 2 is formed in an outer portion B such as a corner portion 13 along a boundary line between the product surface portion 11 and the side wall flange portion 12.
By providing 3, there is an advantage that a good shock absorbing function can be obtained, and a good design property can be secured without impairing the appearance design property at all.

In the present embodiment, the thickness of the resin core 20 and the skin 30 and the depth of the concave groove 23 are 2.5 mm in the general portion of the resin core 20 and the thickness of the skin 3.
As 0, the top layer is 0.5 mm, the foam layer is 3 mm, and the total is 3.
A laminated sheet material having a thickness of 5 mm is used, and the concave groove 23 has a substantially trapezoidal cross section and is set to a depth of about 2 mm.

FIG. 4 shows a modified example of the concave groove 23. If the concave groove 23 is set to have a V-shaped cross section, the resin core material 20 breaks when an impact load is applied from the side of the vehicle. Can be performed more easily.

FIGS. 5 to 7 show another embodiment in which the present invention is applied to a door trim for an automobile. In this embodiment, a protrusion bulging toward the interior of the vehicle is formed on a product surface portion 11 of a door trim 10. The ridges 14 are provided, the ridges 14 form an outverse portion B, and the outer groove B is formed on the back surface of the resin core material 20 in the outverse portion B. The location may be appropriately set as long as the location is within the impact area A.

Although the above embodiment is applied to an automobile door trim 10, a rear corner trim or the like is used.
The present invention can also be effectively applied to interior parts installed on the side wall of a vehicle body.

[0032]

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

(1) In the present invention, an outverse portion is provided in the impact area at the time of a side collision, and a concave groove having a smaller thickness than the resin core material of the general portion is provided on the back surface of the resin core material in the outverse portion. Because it is a configuration that does
When a relatively large impact is applied from the side of the vehicle, the impact load tends to concentrate on the outverse part, and the resin core material breaks easily based on this concave groove, and the impact can be effectively absorbed and This has the effect that the applied shock can be greatly reduced.

(2) According to the present invention, an outverse portion is provided in the impact area at the time of a side collision, and a concave groove having a smaller thickness than the resin core material of the general portion is formed on the back surface of the resin core material of the outverse portion. When the skin material is integrally attached to the surface side of the resin core material, the sink material on the concave groove surface side that occurs in the resin core material is externally It is inconspicuous, has a good product appearance, and has the effect of improving the design of the product.

[Brief description of the drawings]

FIG. 1 is an external 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 perspective view of the vehicle door trim shown in FIG. 1 as viewed from the back side.

FIG. 4 is a cross-sectional view showing a modified form of a concave groove provided in an automobile door trim according to an embodiment of the present invention.

FIG. 5 is an external view showing another embodiment of an automobile door trim to which the present invention is applied.

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

FIG. 7 is a perspective view of the vehicle door trim shown in FIG. 5 as viewed from the back side.

FIG. 8 is an external view showing a conventional automobile door trim.

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

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 Automobile door trim 11 Product surface part 12 Side wall flange part 13 Corner part 14 Ridge 20 Resin core material 22 Groove part 23 Groove part 30 Skin material A Impact area B Outverse part

Claims (3)

[Claims] 1. An automobile interior part (10) in which a resin core material (20) and a skin material (30) are integrally formed into a required shape by a mold press molding die, an external force is concentrated in a side collision. An outverse portion (B) is provided in the impact area (A) of the interior part (10) to be added,
On the back surface of the resin core material (20) of the outverse part (B), a concave groove (23) having a smaller thickness than the resin core material (20) of the general part.
An interior part for an automobile, characterized in that a component is formed. 2. The method according to claim 1, wherein the outverse portion is a corner portion along a boundary between the product surface portion and the side wall flange portion. Automotive interior parts. 3. The outverse portion (B) is a ridge (14) formed on a product surface portion (11) in the impact area (A) at the time of a side collision and bulging into the vehicle interior. The automotive interior part according to claim 1, wherein: