JP2009274406A - Decorative part and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a decorative part which can be manufactured without using a mask and a method of manufacturing the same. <P>SOLUTION: The decorative part has a resin emblem body 4 formed by injection molding in a prescribed form, a metal thin film 5 deposited onto the front surface of the emblem body 4, a transparent resin layer 2 formed so that the emblem body 4 is positioned on the rear surface, and a colored resin layer 3 formed so that the emblem body 4 is positioned on the front surface. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a decorative part such as an emblem provided on the front and rear of a vehicle, a steering wheel or the like, or a decoration attached to a figurine, and a manufacturing method thereof.

  As the emblem described above, for example, a bright colored piece as an emblem is formed on a black colored resin layer by a metal thin film, and a transparent resin layer is formed so that the metal thin film is sandwiched between the colored resin layer. Are known.

By the way, the bright piece is formed in a predetermined shape by vapor deposition using a mask (see, for example, Patent Document 1).
JP 2004-251868 A

  However, when forming an emblem by vapor deposition using a mask as described above, it is necessary to mask portions other than the emblem.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a decorative part that can be manufactured without using a mask and a method for manufacturing the decorative part.

  The decorative part of the present invention includes a resin decorative part main body injection-molded into a predetermined shape, a metal thin film deposited on the front side of the decorative part main body, and a transparent formed so that the decorative part main body is located on the back side It has a resin layer and the colored resin layer formed so that the said decorative component main body may be located in the front side.

  The method for producing a decorative part of the present invention includes a step of injection molding a resin-made decorative part body having a predetermined shape, a step of depositing a metal thin film on the front side of the decorative part body, and a predetermined part in a mold. A step of mounting at a position, a step of injecting a transparent resin into the mold to form a transparent resin layer so that the decorative component body is located on the back side, and a colored resin layer on the back side of the transparent resin layer And a step of performing.

  The decorative part manufacturing method according to claim 3 is the decorative part manufacturing method according to claim 2, wherein a back-side injection gate is left in the injection molding step, and the gate is mounted. The decorative part main body is positioned with respect to the mold by being placed in a positioning hole in the mold used in the process, and the gate is embedded in the colored resin layer in the process of forming the colored resin layer. .

  In the case of the decorative part and the manufacturing method thereof according to the present invention, since the decorative part main body having the metal thin film formed on the front side is used, masking can be eliminated.

  Further, in the case of the decorative part manufacturing method according to claim 3, since the injection gate left in the decorative part main body is embedded in the colored resin layer, the cutting of the gate can be omitted, and the gate is additionally decorated. By using the positioning of the component main body with respect to the mold, the relative position of the decorative component main body with respect to the colored resin layer can be set to a desired position.

  The present invention will be specifically described below.

  FIG. 1 is a front view showing an emblem provided on the front and rear of a vehicle and on a handle as an example of an embodiment of a decorative part of the present invention, and FIG. 2 is a cross-sectional view taken along line II-II in FIG.

  The emblem 1 includes a synthetic resin emblem body 4 between a transparent resin layer 2 on the front side and a black resin layer 3 on the back side, and the transparent resin layer 2 side of the emblem body 4, that is, A metal thin film 5 is formed on the front side.

  The metal thin film 5 is made of indium (In) having excellent reflection characteristics, and is formed on the front side of the emblem body 4 by vapor deposition. Any resin may be used as the transparent resin layer 2 as long as the metal thin film 5 can be visually recognized. The black resin layer 3 is provided in order to improve the visibility of the metal thin film 5. Instead of the black resin layer 3, a colored resin layer of another color may be used.

  The emblem body 4 has a gate 4a for injection on the rear side. In the present embodiment, two gates 4 a are provided, and these gates 4 a are embedded in the black resin layer 3.

  Next, a method for manufacturing the emblem 1 will be described with reference to FIG.

  First, as shown in FIG. 3A, the emblem body 4 is formed. This formation can be performed by, for example, injection molding using a mold. In addition, the gate 4a used for resin injection in this injection molding is left in the emblem body 4 without being cut.

  Next, as shown in FIG. 3B, a metal thin film 5 is deposited on the front side of the emblem body 4. As the metal thin film 5, for example, a bright material such as indium is preferable.

  Subsequently, as shown in FIG. 3C, the emblem body 4 is mounted inside the mold 10 for forming the transparent resin layer 2. At this time, the setting position of the emblem body 4 with respect to the mold 10 is naturally determined by inserting the gate 4 a into the positioning hole 11 formed in advance inside the mold 10. Thereafter, as shown in FIG. 3 (d), the mold 10 is closed, a resin is injected from the injection port 12, and the transparent resin layer 2 is formed on the front side of the emblem body 4 so as to cover the metal thin film 5.

  Next, as shown in FIG. 3 (e), the emblem body 4 on which the transparent resin layer 2 is formed is mounted inside a mold 20 for forming the black resin layer 3. In this illustrated example, the emblem body 4 is mounted with the front side facing downward. And resin is inject | poured from the inlet 21 in the state which closed the metal mold | die 20, and the black resin layer 3 is formed in the back side (illustrated upper side) of the emblem main body 4. FIG. At this time, the thickness of the black resin layer 3 is set to a dimension that hides the gate 4a. Then, by taking out the molded product from the mold 20, the manufacture of the emblem 1 of the present embodiment is completed.

  As described above, in the case of the emblem 1 of the present embodiment, since the emblem body 4 having the metal thin film 5 formed on the front side is used, masking can be eliminated. Further, since the injection gate 4a left in the emblem body 4 is embedded in the black resin layer 3, the cutting of the gate 4a can be omitted, and in addition, the gate 4a is used for positioning the emblem body 4 with respect to the mold 10. By doing so, the relative position of the emblem body 4 with respect to the colored resin layer 3 can be set to a desired position.

  In the above-described embodiment, the transparent resin layer is provided on the front side of the emblem body. However, the present invention does not need to be transparent as the resin layer on the front side of the emblem body, and is translucent if the emblem is visible. It may be a resin layer.

  In the above-described embodiment, the case where an emblem provided on the front and rear of a vehicle, a steering wheel, and the like is manufactured is described as an example. However, the present invention is not limited to the emblem, and is a decorative component used for the interior and exterior of a vehicle. Alternatively, the present invention can be similarly applied to the ornament itself or a decorative part attached to the ornament.

It is a front view which shows the emblem provided in the front and rear of a vehicle, a steering wheel, etc. as an example of one Embodiment of the decorative component of this invention. It is sectional drawing by the II-II line of FIG. It is explanatory drawing of the manufacturing method of an emblem.

Explanation of symbols

1 Emblem 2 Transparent resin layer 3 Black resin layer (colored resin layer)
4 Emblem body 4a Gate for injection 5 Metal thin film 10 Mold for forming transparent resin layer 11 Positioning hole 20 Mold for forming black resin layer

Claims (3)

A resin decorative part body injection-molded into a predetermined shape;
A metal thin film deposited on the front side of the decorative part body;
A transparent resin layer formed so that the decorative part body is located on the back side;
A decorative part having a colored resin layer formed so that the decorative part body is positioned on the front side. A step of injection molding a resin decorative part body of a predetermined shape;
Depositing a metal thin film on the front side of the decorative component body;
Attaching the decorative part body to a predetermined position in the mold;
Injecting a transparent resin into the mold and forming a transparent resin layer so that the decorative component body is located on the back side;
And a step of forming a colored resin layer on the back side of the transparent resin layer. In the manufacturing method of the decorative component according to claim 2,
In the injection molding process, the back side injection gate is left, and the gate is inserted into a positioning hole in the mold used in the mounting process to position the decorative component body with respect to the mold, and the coloring A method of manufacturing a decorative part, wherein the gate is embedded in the colored resin layer in the step of forming a resin layer.

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