JPH03204356A - Trim for automobile - Google Patents

Abstract

PURPOSE:To prevent generation of a shrinkage on a surface by extrusion molding by providing a film laminated on the designed surface side surface of a flexible insert and a trim body having, as a designed surface, one surface in which the insert and the film are buried. CONSTITUTION:A freely curved flexible insert 1, a film 2 laminated on a surface side forming the designed surface 4 side of the insert 1, and a trim body 3 having at least one surface in which the insert 1 and the film 2 are buried as the designed surface 4 are provided. This constitution allows the extrusion molding by simultaneous extrusion with the trim body 3 in the state where the film 2 is superposed on the surface side forming the designed surface 4 side of an automobile trim of the insert 1. On the surface side of the insert 1 forming the designed surface 4 side, the layer of trim body 3 is formed on the surface of the film 2, and as this layer can be uniformalized, no shrinkage is formed on the designed surface side of the automobile trim.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used for the interior or exterior of an automobile body, or for sealing purposes, such as for the tip of an automobile top plate. The present invention relates to a trim for an automobile such as a trim roof headlining that achieves end treatment of a plate-like object and a design effect, and particularly relates to the structure of the trim for an automobile.

[Prior art] As a conventional trim for this type of automobile, Japanese Patent Application Laid-Open No. 63-7
There is a technique published in Publication No. 3737.

The technology described in this bulletin involves extruding an automobile trim whose core material is wrapped in synthetic resin into a flat band shape, and then attaching multiple threads to one side of the extruded product so that they are parallel to each other and almost in contact with each other. These threads are arranged and fed, and pressed onto the extrusion molded product by a pressing roller to cover one side of the extrusion molded product with these threads, and the extrusion molded product whose one side is covered with the threads is cooled. Then, the cooled extrusion molded product is bent into a U-shaped cross section so that one surface covered with thread becomes the outer surface.

Therefore, since the cover is applied during the manufacturing process of automotive trim, it is possible to improve workability and reduce costs.

[Problems to be Solved by the Invention] However, in the technique of coating one side of an extrusion molded product with thread, such as the technique published in the Nisoku Gazette, the covered thread waves on the surface of the automobile trim. I sometimes see phenomena.

That is, when extrusion molding automotive trim, if a bellows-shaped band member with notches on both sides is used as a bendable and highly flexible insert, sink marks will occur on the surface of the automotive trim. This is due to the fact that it affects the coated yarn.

However, due to the nature of automotive trim, it is necessary to have good flexibility, and flexibility of the insert is an essential requirement. The core material is a so-called bellows-shaped, bendable and highly flexible insert, such as one made by repeatedly and continuously notching or punching out both sides of a strip steel plate, or a wire rod made by repeatedly and continuously bending it. wrapped in synthetic resin,
The thickness of the synthetic resin changed depending on the position of the insert, and sink marks appeared on the surface of the automotive trim, which did not look good.

SUMMARY OF THE INVENTION An object of the present invention is to provide a trim for an automobile that does not cause sink marks on its surface even when it is extruded using a bendable and highly flexible insert as a core material.

[Means for Solving the Problems] The automotive trim according to the present invention includes a film stacked on the design surface side of a bendable and highly flexible insert, and at least a film in which the insert and the film are embedded. It consists of a trim body with one side as a design side.

[Function] In the present invention, a bendable and highly flexible insert and a film stacked on the design side of the insert are superimposed, and the insert and film are embedded to form a core material, A trim body is formed around it using synthetic resin.

Therefore, the thickness of the synthetic resin forming the trim body is approximately equal between the film and the surface facing the design surface, and sink marks do not occur on the design surface side.

[Example] Examples of the present invention will now be described.

FIG. 1 is a cross-sectional view showing an automobile trim according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the automobile trim according to a first embodiment of the present invention in a curved state.

Furthermore, FIGS. 3(a) and 3(b) are plan views showing an insert used in an automobile trim according to an embodiment of the present invention.

In FIG. 1, an insert 1 is a bellows-shaped, bendable, and highly flexible copper band. Further, the film 2 is made of a material having relatively high hardness and high elasticity. The trim body 3 is made of synthetic resin in which the insert 1 and film 2 are embedded and wrapped around them. The trim body 3
The synthetic resin material of and the synthetic resin material of the film 2 are the same material, and in this embodiment, PVC is used. The design surface 4 of the trim body 3 of this embodiment is on the -1- plane in FIG. 1, and the trim body 3 and the film 2
In this relationship, they are stacked on the surface of the insert 1 facing the design surface 4.

The automotive trim of this embodiment having the above structure is manufactured as follows.

First, a bendable and highly flexible insert 1 and a film 2 stacked on the surface of the insert 1 that is the design surface 4 side of the automotive trim are simultaneously fed to an extrusion molding machine in a superposed state, A synthetic resin is extruded around the insert 1 and film 2 so as to embed the insert 1 and film 2, and the trim body 3 is extruded.

After that, the trim body 3 is cooled down, and as shown in FIG.
It is bent into a substantially U-shape from the center to form an automobile trim, and is used alone or in conjunction with other members.

The automotive trim of this embodiment configured in this way includes a bendable and highly flexible insert 1, a film 2 stacked on the surface of the insert 1 on the design surface 4 side, and the insert 1 and the The trim body 3 is provided with a trim body 3 having a design surface 4 on at least one surface in which a film 2 is embedded.

Therefore, the design surface 4 of the automotive trim of the insert 1
By extruding the film 2 on the side surface side and extruding it simultaneously with the trim body 3, an automobile trim with a cross-sectional shape as shown in Fig. 1 is obtained, and it can be used as a normal core material. It can be manufactured using the same process as insert inserts.

In addition, the insert 1 which becomes the design surface 4 side of the automotive trim
A layer of the trim body 3 is formed on the surface side of the film 2, and the thickness of this layer can be made uniform, so that sink marks do not occur on the design surface 4 side of the automotive trim.

In particular, the synthetic resin material of the film 2 and the trim body 3,
If they are made of the same material, they can be integrated by fusion, and a solid automobile trim can be constructed. Of course, even if the melting point of the synthetic resin constituting the film 2 is made higher than the melting point of the synthetic resin material of the trim body 3 and the two are bonded, the film 2
By extruding the trim body 3 in an unmolten state, the layer of the trim body 3 on the surface of the film 2 can be made uniform, so that the appearance of the design can be further improved.

In this example, a metal strip as shown in FIGS. 3(a) and 3(b) was used as the bendable and highly flexible insert 1.

The insert 1 shown in FIG. 3(a) has a thin metal band 10 with deep notched grooves 13 on both sides, a pair of through holes 12 in the center, and shallow notched grooves 11 on both sides. 12. The pair of shallow notch grooves 11 on both sides are continuously formed by repeated punching or the like.

Further, the insert 1 shown in FIG. 3(b) has deep, substantially V-shaped notch grooves 14 continuously formed on both sides of a thin metal strip 10 by repeated punching or the like. This type of insert 1 has a relatively uniform wall thickness after the punching process of the insert 1 itself, and as a result, it is easy to make the layer of the trim body 3 on the surface of the film 2 uniform. As a result, the appearance of the product also improves. but,
Even in inserts in which the wire is repeatedly meandered in a curved manner and the meandering interval is maintained by a thread, the meandering interval and the film 2
Good results can be obtained depending on the strength of

FIG. 4 is a sectional view showing an automotive trim according to a second embodiment of the present invention. In the drawings, the same reference numerals and symbols as those in the first embodiment indicate the same or corresponding components, so redundant explanations will be omitted here, and in particular, the differences will be omitted. I will only explain.

In FIG. 4, in this embodiment, the film 2 stacked on the surface facing the design surface 4 of the bendable and highly flexible insert 1 consists of two films 21 and 22. The film 21 is made of the same synthetic resin material as the trim body 3 and is integrated by fusion, and the film 22 is made of a different synthetic resin material from the trim body 3.

Therefore, in the case of the automotive trim of this embodiment, the film 22 can be molded while maintaining the thickness of the surface of the insert 1 on the design surface 4 side, and when it is bent, slipping occurs between the two. It can respond smoothly to changes in shape. Of course, the synthetic resin material constituting the film 21 may be the same as or bondable to the synthetic resin material of the trim body 3, and the two may be bonded together to form one body.

In the case of this type of embodiment, the film 22 maintains the thickness of the surface of the insert 1 on the design surface 4 side, and
Since the effect of sink marks occurring on the opposite side is cut off between the films 21 and 22, the thickness can be made uniform, and the appearance of the design surface 4 can be improved. .

Although the film has two layers in this example, more layers may be used when carrying out the present invention.

FIG. 5 is a sectional view showing an automobile trim according to a third embodiment of the present invention. In the drawings, the same reference numerals and symbols as those in the first embodiment indicate the same or corresponding components, so redundant explanations will be omitted here, and in particular, the differences will be omitted. I will only explain.

In FIG. 5, in this embodiment, the trim main body 3 is formed of a main body portion 31 and a transparent portion 32.

In this example, film 2 is an embossed film,
The pattern is transmitted through the transparent portion 32.

Therefore, in this embodiment, the transparent part 32 is formed on the side of the design surface 4, so that the film 2 is also used as an embossed film for obtaining a design effect, so that the pattern ζ1 can be printed. In addition, in this embodiment, although the film 2 is commonly used as an embossed film to obtain a design effect, and one side of the film is covered with a transparent part 32, dirt gets into the three-dimensional pattern of the embossed film and is difficult to wipe off. It never becomes.

By the way, a bendable and highly flexible insert according to an embodiment of the present invention 1. may be any band-like part used as a known insert, and is not limited to its shape.

Further, in the case of carrying out the embodiment of the present invention, the film 2 stacked on the surface of the insert 1 on the design surface 4 side is one or more.
In the case of a plurality of inserts, an adhesive can be applied between the inserts 1 and the insert 1 as necessary.

The trim body 3 in which the insert 1 and the film 2 are embedded and has at least one surface as the design surface 4 in the embodiment of the present invention has been described on the assumption that the design surface is on one side. When implementing the present invention, the design surface can be both surfaces.

Furthermore, as the films 2 and 7 when carrying out the present invention,
Materials such as non-woven fabric, paper, and rubber can be used, and basically any material that is highly elastic and is not affected by heat during extrusion can be used. Any material that can form a uniform layer is fine.

Furthermore, in the present invention, an example in which a designed surface is formed with the trim body 3 has been explained, but when implementing the present invention, embossed tape, cloth, thread, etc. are bonded to the trim body 3,
It can also be used as a direct design surface.

[Effects of the Invention] 1 2 As described above, the automotive trim of the present invention includes a bendable and highly flexible insert, a film stacked on the design surface side of the insert, and a film stacked on the design side of the insert. The trim body includes an insert and a trim body having at least one surface as a designed surface, in which an insert and a film are embedded.

Therefore, it is possible to extrude the insert by co-extrusion with the trim body while the film is superimposed on the surface side of the insert that is the design side of the automotive trim. In addition, on the surface side of the insert, which is the decorative side of the automotive trim, a layer of the trim body is formed on the surface of the film, and this layer can be made uniform, so sink marks will not occur on the decorative side of the automotive trim. There is no.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an automotive trim according to a first embodiment of the present invention, FIG. 2 is a sectional view of an automotive trim according to a first embodiment of the present invention in a curved state, and FIG. 3 is a sectional view showing an automotive trim according to a first embodiment of the present invention. FIG. 4 is a plan view showing the insert used in the automotive trim of the embodiment; FIG. 4 is a sectional view showing the automotive trim of the second embodiment of the present invention;
FIG. 5 is a sectional view showing an automobile trim according to a third embodiment of the present invention. In the figure, 1: insert 2: film 3 Nidorim body 4: design surface. In the drawings, the same reference numerals and the same symbols indicate the same or equivalent parts.

Claims (1)

[Scope of Claims] A bendable and highly flexible insert, a film made of a synthetic resin stacked on the design side of the insert, and at least one surface in which the insert and film are embedded. An automobile trim comprising a trim body made of synthetic resin and a design surface.