JPH04356242A - Car decorative panel and manufacture thereof - Google Patents

Abstract

PURPOSE:To provide a car decorative panel which looks as though having a number of fisheye lenses when seen from the outside and which is excellent from the point of view of design by utilizing a metal mold for resin molding which can be fabricated by low-cost machining. CONSTITUTION:An outside body 1 made of a translucent synthetic resin material and having a plurality of recessed spherical portions 1a formed in the inside reverse face thereof is formed integrally with an inside body 2 made of a synthetic resin material and having a plurality of projecting spherical portions 2b formed on the surface thereof.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a decorative plate for an automobile, and for example, to a decorative plate for an automobile used for a rear combination lamp integrated with a garnish at the rear end of a passenger car, and a method for manufacturing the same. It is something.

0002

[Prior Art] Conventional decorative panels for automobiles of this type include
The technique of the decorative board disclosed in Japanese Patent Application Laid-Open No. 1-275235 can be mentioned.

That is, the above technique divides the back surface of a transparent resin base material into two or more areas, coats the adjacent areas with different colors such as colorless transparent or colored transparent, forms a base coat layer on each side, and By forming a metal reflective film layer on the surface and further providing a protective film layer on the back side, a deep metallic feel can be expressed.Furthermore, a single transparent resin base material can be used to create a wide variety of metallic impressions. It is something that can be done.

[0004] A similar technique involves a decorative board in which a transparent resin base material is divided into a plurality of parts, and adjacent base materials are colored with different translucency to express a deep design.

FIG. 2 is a perspective view showing the rear of an automobile to which an automobile decorative plate is attached, and FIG. 3 is a sectional view showing a conventional automobile decorative plate.

In FIG. 2, rear combination lamps 21 are provided on both sides of the rear of an automobile 30. As shown in FIG. Further, in many cases, an automobile decorative panel, that is, a garnish 20 is disposed between them so that the rear combination lamps 21 are arranged in a continuous manner. This type of arrangement is known. Note that this type of garnish 21 is made of red or amber to match the color tone of the rear combination lamp 21. Specifically, the red or amber color is made to match the red or amber color of the rear combination lamp 21.

Further, in FIG. 3, the main body 10 is a transparent body in a chromatic color such as amber, that is, a transparent material, for example, made of acrylic resin or synthetic resin such as polycarbonate. ing. This main body 1
A large number of concave spherical portions 10a are formed on the back surface of 0. A large number of concave spherical parts 10a are integrally molded by a mold 13 for resin molding, and the concave spherical part 10a of the main body 10 is formed by a convex spherical part 13a of the mold 13.
It constitutes a decorative plate for automobiles.

In this type of automobile decorative plate, when the concave spherical portion 10a of the main body 10 is viewed from the direction of the arrow, its convex spherical shape looks like a number of fish-eye lenses, and is almost in line with the rear combination lamp 21. It appears to show a similar design.

[0009]

[Problems to be Solved by the Invention] However, in order to form a plurality of fisheye lenses, a large number of convex spherical shapes 13a must be formed in the mold 13.
In this case, the mold 13 must be manufactured by pattern machining or electrical discharge machining from another model, making the manufacturing of the mold 13 expensive.

Therefore, the present invention utilizes a resin molding mold that can be manufactured by relatively inexpensive machining to create an automobile that appears to have a large number of convex spherical fisheye lenses from the outside. An object of the present invention is to provide a decorative board for use in a car and a method for manufacturing the same.

[0011]

[Means for Solving the Problems] In the automobile decorative plate according to the invention of claim 1, the inner body made of a synthetic resin material having a plurality of convex spherical parts formed on the surface is made of a synthetic resin material having translucent properties. A plurality of concave spherical parts are formed on the inner back surface of the outer body made of a resin material, and the concave spherical parts are joined to the plurality of convex spherical parts of the inner body in a face-to-face manner. .

The method for manufacturing a decorative panel for an automobile according to the second aspect of the invention includes the steps of forming an inner body made of a synthetic resin material having a plurality of convex spherical parts formed on the surface thereof, and an inner body formed in the forming step. The method includes a step of molding an outer body made of a transparent synthetic resin material and joined to the plurality of convex spherical parts of the inner body in a face-to-face state on a plurality of convex spherical parts of the body. be.

[0013]

[Operation] In the automobile decorative plate according to the invention of claim 1,
An inner body made of a synthetic resin material has a plurality of convex spherical parts formed on its surface, and a plurality of concave spherical parts are formed on the inner back surface of an outer body made of a transparent synthetic resin material, and the concave spherical parts are Since the spherical part is joined to the plurality of convex spherical parts of the inner body in a face-to-face manner, the inner body can be molded by a mold having a large number of concave spherical parts, and the outer body The inner body is joined to the concave spherical part in a protruding state, and a plurality of convex spherical fisheyes are formed on the inner body, so it appears that it has many convex spherical fisheye lenses from the outside. It looks like.

In the method of manufacturing a decorative plate for an automobile according to the second aspect of the invention, first, a plurality of convex spherical portions are formed on the surface of an inner body made of a synthetic resin material, and the plurality of convex portions of the formed inner body are An outer body made of a light-transmitting synthetic resin material is integrally joined to a plurality of convex spherical parts of the inner body in a face-to-face manner on a spherical part.

[0015]

[Examples] Examples of the present invention will be described below.

FIG. 1 is a sectional view showing an automobile decorative plate according to an embodiment of the present invention, and FIG. 2 is a perspective view showing the rear of the automobile to which the automobile decorative plate is attached. In the drawings, the same reference numerals and symbols as those in the above conventional example indicate constituent parts that are the same as or correspond to those in the above conventional example.

In the figure, the outer body 1 has the same structure as the conventional one.
For example, it is made of a translucent chromatic synthetic resin such as acrylic resin or polycarbonate. An inner body 2 made of a transparent synthetic resin material of a chromatic color such as amber is bonded to the inside of the outer body 1 . This joining is achieved by injection molding the softened outer body 1 onto the hardened inner body 2. On the surface of this inner body 2,
A large number of convex spherical parts 2b are formed, and the convex spherical parts 2b of the inner body 2 are integrally formed by the concave spherical shape of a resin molding mold (not shown). The outer body 1 is joined to the plurality of convex spherical portions 2b of the inner body 2 in a face-to-face state, and the outer body 1 and the inner body 2 are closely attached and integrated into a two-color laminated molded product for use in automobiles. It forms a decorative plate. Note that the back surface portion 2c of the inner body 2 is substantially flat.

Therefore, in this type of automobile decorative plate, the inner body 2 can be integrally molded using a mold having a large number of concave spheres, so that it is easy to cut a large number of concave spheres into the mold. It can be formed by relatively inexpensive machining such as, and the mold manufacturing cost is extremely low compared to forming a large number of convex spheres in a mold by electric discharge machining.

In addition, since the inner body 2 is joined to the concave spherical portion 1a of the outer body 1 in a protruding state, and the continuous convex spherical portion 2b is formed on the surface of the inner body 2, it is difficult to prevent external damage. Even when viewed from the direction of the arrow in FIG. 1, the outer body 1 appears to have a large number of concave spherical fisheye lenses. The concave spherical portion 1a of the outer body 1 acts as a large number of fisheye lenses, and a design substantially similar to that of the rear combination lamp 21 can be obtained.

[0020] As described above, the automobile decorative plate of this embodiment is made of an inner body 2 made of a synthetic resin material with a plurality of convex spherical portions 2b formed on its surface, and a synthetic resin material having translucency. The outer body 1 is provided with a plurality of concave spherical parts 1a formed on the inner back surface, and the outer body 1 and the inner body 2 are brought into close contact with each other to form a two-color laminate molded product. That is, in this embodiment, a plurality of concave spherical parts 1a are formed on the back surface of an outer body 1 made of a transparent synthetic resin material, and a plurality of concave spherical parts 1a of this outer body 1 are made of a transparent synthetic resin material. The inner body 2 is made of a chromatic synthetic resin material and is joined in a face-to-face manner.

Therefore, it is sufficient to mold the outer body 1 using the inner body 2 which is molded by a conventional relatively inexpensive resin molding mold having a large number of concave spheres.
It can be manufactured extremely cheaply. Furthermore, since the concave spherical portion 1a of the outer body 1 is joined to the multiple convex spherical portions 2b of the inner body 2 in a protruding state, it has a large number of convex spherical fisheye lenses from the outside. As a result, an automobile decorative plate having a large number of concave spherical fisheye lenses can be manufactured at an extremely low cost.

By the way, in the above embodiment, the back surface portion 2c of the inner body 2 was described as a decorative plate for an automobile having a substantially flat surface.
A fine grain pattern or an embossed pattern may be applied to the back surface 2c of the inner body 2. Further, the back surface portion 2c of the inner body 2 may be coated with a metallic coating or the like to form a reflective layer or the like. This metallic coating layer is not limited to simply forming a coating film by coating, but can also be formed by metal vapor deposition, sputtering, or the like. Inner body 2 like this
By forming a metallic coating layer or the like on the back surface portion 2c, it can also be used as a reflector or garnish. Further, a coating layer can be similarly formed on the continuous convex spherical portion 2b of the inner body 2.

Further, in the above embodiment, the inner body 2 is amber in color, but if the design is to match that of a stop lamp, the inner body 2 must be made of a red synthetic resin material having light transmittance. In this way, the range of use can be expanded by appropriately changing the chromatic color of the inner body 2 depending on the location of use. The concave spherical part is not limited to a perfect sphere, but may also be an irregularly shaped sphere, such as a rugby ball-like sphere with a circular cross section.

[0024]

As explained above, the automobile decorative plate according to the invention of claim 1 includes an inner body made of a synthetic resin material having a plurality of convex spherical parts formed on the surface, and a synthetic resin material having a light-transmitting property. The outer body is made of a material and has a plurality of concave spherical parts formed on the inner back surface, and the outer body has the concave spherical parts joined to the plurality of convex spherical parts of the inner body in a flush state. Therefore, by using a simple configuration in which the inner body and the outer body are joined in a face-to-face state, it is possible to mold a large number of concave spherical parts on the outer body, and it can be manufactured at an extremely low cost. Since the inner body is joined to the spherical part in a protruding state and a plurality of convex spherical parts are formed on the inner body, it appears from the outside to have a fisheye lens made of many convex spheres. It becomes a decorative plate for automobiles with excellent design.

In the method of manufacturing a decorative plate for an automobile according to the second aspect of the invention, a plurality of convex spherical parts are formed on the surface of the inner body made of a synthetic resin material, and the plurality of convex spherical parts of the formed inner body The outer body made of a synthetic resin material having translucency is integrally joined to the plurality of convex spherical parts of the inner body in a face-to-face manner, so that the plurality of convex shapes of the inner body The spherical part can be used as a mold and can be manufactured at extremely low cost.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a decorative plate for an automobile, which is an embodiment of the present invention.

FIG. 2 is a perspective view showing the rear of an automobile to which an automobile decorative plate is attached.

FIG. 3 is a sectional view showing a conventional automobile decorative plate.

[Explanation of symbols]

1. Outer body 1a Concave spherical part 2 Inner body 2b Convex spherical part

Claims (2)

[Claims] 1. An inner body made of a synthetic resin material with a plurality of convex spherical parts formed on the surface thereof, and a plurality of concave spherical parts formed on the inner back surface of the inner body made of a synthetic resin material having translucency; A decorative plate for an automobile, comprising an outer body in which a concave spherical part is joined to a plurality of convex spherical parts of the inner body in a face-to-face manner. 2. A step of forming an inner body made of a synthetic resin material having a plurality of convex spherical portions formed on its surface, and a step of imparting translucency to the plurality of convex spherical portions of the inner body formed in the forming step. 1. A method for manufacturing a decorative plate for an automobile, comprising the step of molding an outer body made of a synthetic resin material having a synthetic resin material and integrally joined to a plurality of convex spherical portions of the inner body in a face-fitting state.