JP2002186510A - Precious-metal trinket and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a precious-metal trinket and a manufacturing method therefor, which permit different precious-metal raw materials to be infilled into a hollow main body for the purpose of adding cost competitiveness to a product, enable the provision of the easy-to-use product coming into favorable contact with a person's skin, and enable an arbitrary pattern, etc., to be easily formed in a desired position, a desired size, or the like by using the plural precious-metal raw materials. SOLUTION: This precious-metal trinket is provided with the hollow main body 1 of the precious-metal trinket which is formed with a recess 2 by means of precious metal or a precious-metal alloy, and a filled part 3 which is cast in the recess 2 of the main body 1 and composed of the precious metal or the precious-metal alloy different from the main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for manufacturing a noble metal decoration, and a hollow body is filled with a different noble metal material to add cost competitiveness to the product, and has a good skin contact and is easy to use. Manufacture of precious metal ornaments and precious metal ornaments that can provide products and that can easily form arbitrary patterns and the like at desired positions and sizes using a plurality of precious metal materials with different hues It is about the method.

[0002]

2. Description of the Related Art Hitherto, decorative articles of various designs have been manufactured for precious metal decorative articles by handwork using a technique such as rolling, sanding, shaving, brazing, or the lost wax method.

Along with such a skillful processing method, Japanese Patent Laid-Open Publication No. 61-23814, Japanese Unexamined Patent Publication No. 3-218705, and Japanese Unexamined Patent Publication No.
13224, JP-A-7-313225, JP-A-56-18806, and JP-A-6-721.
No. 0, a material composed of a plurality of precious metal plate members joined by cladding as described in JP-A-6-10011, or a plurality of materials at the time of casting as described in JP-A-3-136604. It is known that a precious metal decorative product having a different color pattern having a different hue can be obtained by fusion bonding a precious metal.

[0004]

However, it goes without saying that there is a limit to the manufacturing technique for obtaining precious metal decorative articles of various designs by the lost wax method alone. Even in the method of obtaining precious metal decorative parts with different hues of different hues by using a material consisting of multiple precious metal plate materials that are clad and bonded together, or by melting and bonding multiple precious metals at the time of casting, it is possible to simply clad a plate or wire. It was not possible to easily form an arbitrary pattern or the like at a desired position, size, or the like simply by assembling by joining or simply joining two kinds of noble metals at the time of melting.

[0005] Further, each of the methods uses expensive precious metal materials in a solid state, and has a drawback that although it is heavy, it is heavy and difficult to use and the cost is high. Further, in order to solve the problem of heavy weight, the back and side surfaces of the noble metal ornaments have been made hollow (thinned) to reduce the weight, but on the contrary, the skin contact becomes worse. was there.

According to the present invention, a hollow body is filled with a different noble metal material to add cost competitiveness to the product, and to provide a product with good skin contact and easy to use. It is an object of the present invention to provide a noble metal ornament and a method of manufacturing the noble metal ornament that can easily form an arbitrary pattern or the like at a desired position or size.

[0007]

The noble metal ornament of the present invention comprises a hollow main body of a noble metal ornament formed with a noble metal or a noble metal alloy, and a hollow main body cast in the recess of the hollow main body. And a filling portion made of a different noble metal or a noble metal alloy.

The method of manufacturing a noble metal decorative article according to the present invention comprises forming a hollow main body of a noble metal decorative article having a casting recess formed using a noble metal or a noble metal alloy, and setting the hollow main body in a mold for producing a wax model. After that, wax is press-fitted into the casting recess to form a model integrated with the hollow body, and then a mold is made using the integrated model according to the lost wax method. A filling portion of a different material is formed in the hollow main body by casting a noble metal alloy and filling the casting concave portion of the hollow main body.

In the precious metal decorative article or the method for manufacturing a precious metal decorative article according to the present invention, the concave portion of the hollow main body is characterized in that it is a through hole communicating from the back surface of the hollow main body to the surface.

According to the present invention, as described above, a noble metal material different from the hollow main body is cast and filled in the casting recess formed in the hollow main body of the noble metal decorative article. Precious metal decoration products and precious metal decoration products that can add cost competitiveness to products using precious metal materials, and can easily form arbitrary patterns etc. at desired positions and sizes using multiple precious metal materials It has become possible to provide a manufacturing method.

According to the present invention, a hollow main body made of a noble metal or a noble metal alloy is used, and a casting recess formed in the hollow main body is cast and filled with a noble metal or a noble metal alloy different from the hollow main body. As a result, it is possible to provide a precious metal decorative article and a method of manufacturing a precious metal decorative article which are extremely lightweight, excellent in a sense of quality, have good skin contact, are easy to use, and are inexpensive and cost-competitive. Was.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a precious metal decorative article according to the present invention. FIG. 1 is a plan view showing an embodiment of a noble metal ornament according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a longitudinal sectional view thereof, and FIG. 4 shows another embodiment of the noble metal ornament according to the present invention. FIG. 5 is a longitudinal sectional view, and FIG. 5 is a flowchart showing steps based on the method for manufacturing a noble metal ornament according to the present invention.

In FIGS. 1 to 3, reference numeral 1 denotes a hollow main body having substantially the entire shape of a noble metal ornament, which is electroformed using a noble metal or a noble metal alloy.
And so on. The figure shows an example applied to a ring. The hollow body 1 has a casting recess 2 formed therein. In the figure, the concave portion 2 is formed of a through hole extending from the front surface to the rear surface. The concave portion 2 of the hollow main body 1 is filled with a material made of a noble metal or a noble metal alloy different from that of the hollow main body 1, and a desired filling portion 3 is formed. In this way, it is possible to provide a product that is easy to use and has good skin contact on the surface of the ring.

The noble metal or noble metal alloy constituting the hollow body 1 and the filling portion 3 includes gold, silver, platinum, and alloys thereof. Of course, the hue of each can be changed by changing the type of noble metal used and the alloy composition. By combining precious metal materials of the same hue, for example, platinum and white gold, it is possible to obtain a precious metal decoration product that is very expensive but cheaper than it looks and has cost competitiveness. In addition, by using materials having different hues for the hollow body 1 and the filling portion 3 respectively, it is possible to make the above-mentioned filling portion 3 clearly emerge from the hollow body 1 as a pattern portion.

[0015] In the production of the precious metal decorative article, FIG.
A desired noble metal ornament can be obtained through the steps shown in the flowchart shown in FIG. That is, first, the hollow main body 1 of the noble metal decorative article in which the casting recess 2 is formed using a noble metal or a noble metal alloy is manufactured. After setting the obtained hollow body 1 in a mold for producing a wax model, the casting recess 2 is formed.
Wax is press-fitted into a model integrated with the hollow body 1, and then a mold is made using the integrated model according to the lost wax method. This mold is cast with a noble metal or a noble metal alloy different from the hollow body 1 to fill the casting recess 2 of the hollow body 1, and the filled portion 3 has the same hue as that of the hollow body 1 while having a very high quality feeling. It is possible to obtain a precious metal decorative article which is cheaper than it looks and has cost competitiveness, or a precious metal decorative article in which the filling portion 3 is raised as a pattern portion with a different hue from that of the hollow body 1.

In the obtained casting, a gap due to the difference in the expansion coefficient of the noble metal material often occurs at the joint portion between the hollow body and the filling portion 3 formed by filling (precious metal) into the concave portion formed by the concave portion 2. . In this case, it is desirable to compensate by filling with a brazing material and brazing, or filling an adhesive or other filling material. Of course, it is also possible to compensate by pressing with a jig / tool.

The position of the filling portion 3 may be provided at any position such as the front surface, the side surface, and the back surface of the noble metal ornament. In the case of a ring or the like, there is no need to worry about falling off when forming a ring shape on the outer periphery, but when forming on the side surface or inner surface, not only the above-mentioned compensation means but also a retaining structure such as unevenness provided at the joint site It is desirable to take care not to fall off.

FIG. 4 shows a hollow main body 11 in which a hollow structure is provided only on the upper part of a noble metal ornament, and this portion is made of a noble metal or a noble metal alloy by means such as electroforming. Also in this example, the concave portion 12 is a through hole, but does not have to penetrate as described above. A noble metal or a noble metal alloy different from that of the hollow body 11 is cast into the recess 2 to fill the casting recess 12 of the hollow body 11, thereby forming a filling portion 13.

In each of the above embodiments, the present invention is applied to a ring. However, the present invention is applied to hanging decorations such as necklaces, pendants, earrings, bracelets, brooches, tie stoppers, tie pins, and other precious metal decorations. It goes without saying that you can do it.

[0020]

As described above, according to the present invention, a noble metal material different from the hollow main body is cast and filled in the casting recess formed in the hollow main body of the noble metal decorative article. Precious metal decorations and precious metal decorations that can add cost competitiveness to products using inexpensive precious metal materials, and can easily form arbitrary patterns and the like at desired positions and sizes using multiple precious metal materials It has become possible to provide a method of manufacturing a product.

Further, according to the present invention, a hollow main body made of a noble metal or a noble metal alloy is used, and a casting noble metal or a noble metal alloy different from the hollow main body is cast and filled in a casting recess formed in the hollow main body. As a result, it has become possible to provide a precious metal decorative article which is extremely lightweight, has a high-class feel, is cheaper than it looks and is cost-competitive, and a method of manufacturing the precious metal decorative article.

Further, according to the present invention, a hollow main body made of a noble metal or a noble metal alloy is used, and a noble metal or a noble metal alloy different from the hollow main body is cast and filled in a casting recess formed in the hollow main body. As a result, it has become possible to provide a precious metal decorative article having a very good skin contact and a high commercial value, and a method for producing the precious metal decorative article.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a noble metal ornament according to the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a longitudinal sectional view thereof.

FIG. 4 is a longitudinal sectional view showing another embodiment of the noble metal ornament according to the present invention.

FIG. 5 is a flowchart showing steps based on the method for manufacturing a noble metal decorative article of the present invention.

FIG. 6 is a longitudinal sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow main body 2 Concavity 3 Filling part 11 Hollow main body 12 Concave 13 Filling part

Claims (4)

[Claims] 1. A hollow body of a noble metal decorative article having a recess formed using a noble metal or a noble metal alloy, and a filling portion cast in the recess of the hollow body and made of a noble metal or a noble metal alloy different from the hollow body. Precious metal ornaments characterized by the following. 2. The noble metal ornament according to claim 1, wherein the concave portion of the hollow body is a through hole communicating from the back surface to the surface of the hollow body. 3. A hollow body of a noble metal decorative article having a recess for casting formed using a noble metal or a noble metal alloy, and after setting the hollow body in a mold for producing a wax model, wax is poured into the recess for casting. Press-fit to make a model integrated with the hollow body, then use this integrated model to make a mold according to the lost wax method, cast a noble metal or a noble metal alloy different from the hollow body into this mold, A method for producing a noble metal decorative article, characterized in that a filling portion of a different material is formed in a hollow body by filling a mold concave portion. 4. The method according to claim 3, wherein the concave portion of the hollow body is a through hole communicating from the back surface to the surface of the hollow body.