JP7469784B2 - Metal Jewelry - Google Patents

Description

To provide a metal accessory for use as a low-cost, aesthetically pleasing accessory, in which a plate-like body is formed into a wavy surface and a rugged pattern of fine lines is applied to the wavy surface.

When trying to produce general jewelry parts by casting, i.e. a casting method using resin wax, the cast product is finished in an annealed state, so the material does not have sufficient hardness, and thin or long pieces tend to lack strength, so production with this method is avoided.
For this reason, attempts have been made to obtain jewelry parts by a press manufacturing method in which a plate-shaped body is pressed between a pair of dies. For example, Japanese Patent Laid-Open Publication No. 2003-25024 (see Patent Document 1) discloses a surface processing method for ornamental parts, in which a pair of facing dies are brought close to each other to clamp one or more ornamental parts between the facing parts, and at least one of the dies is rotated in the circumferential direction to roll the ornamental part between the dies, while a fine uneven pattern is formed on the surface of the ornamental part by a large number of protrusions formed on the facing parts of the dies.

However, in casting , fine lines perpendicular to the processed surface on the surface of the plate-shaped body can be provided at the mass production stage, but in the press manufacturing method, fine lines engraved perpendicular to the processed surface can only be processed later.

JP 2003-25024 A

In the case of the conventional press manufacturing method described above, roughening of small decorative parts is essentially a process called "pear-skin" processing, which merely removes the surface gloss. Since the irregularities used to roughen the surface are extremely fine and the rough surface layer is shallow, even if a pear-skin pattern is created during the processing process, it often disappears partially in the subsequent finishing process.
Furthermore, even if a press manufacturing method were to be applied, the press molds used in the press manufacturing method are expensive, which would result in a significant increase in costs in order to obtain high-quality metal jewelry .

The metal ornament of the present invention is characterized in that it comprises a plate-shaped body that has been processed to have a wavy surface shape, and that the wavy surface shape of the plate-shaped body is formed with a bumpy pattern made up of extremely fine lines.

The metallic ornament of the present invention is also characterized in that the metallic ornament is produced by casting .

The metallic ornament of the present invention is also characterized in that the plate-like main body constituting the metallic ornament has a thickness of 1.0 mm or less, preferably 0.3 mm or less.

The metal ornament of the present invention is further characterized in that the extremely fine lines constituting the uneven pattern formed on the wavy surface shape of the plate-like body have a width of 0.2 mm or less and a height of 0.2 mm or less.

Next, the effects obtained by the metal jewelry of the present invention are listed as follows.
1) The cost of producing a mass production mold is low.
In other words, since it can be manufactured using only one injection mold compared to a press mold (which requires two or more molds for punching and drawing), it can be manufactured in about 1/10 the size.2) By forming the plate body so that it has a wavy surface shape, even a thin plate with an extremely small thickness obtained by casting can have practical strength.
3) By adding a fine-line uneven pattern to the wavy surface shape of the plate-like body, the light reflection intensity is varied, and the surface has more visual depth (contrast difference) compared to a case where only the wavy surface shape is provided, resulting in a more attractive appearance.
4) Since less raw materials are used, cheaper products can be produced.
5) Compared to the press method, products can be manufactured with fewer steps and in a shorter time.
6) Because it is done by casting , the cost of material recycling is low, and as a result, the overall manufacturing cost of the product can be kept low. In other words, in material recycling by casting, the scrap material is used as is, so recycling is possible within the factory that owns the casting equipment, but in material recycling by the pressing method, most manufacturers outsource the work to a rolling specialist, which increases costs.
7) With the press manufacturing method, additional decorations such as stone settings and rings require separate production and post-processing by soldering, but with casting , the decorations can be installed on the original model in advance, making it possible to produce products with fewer steps and in a shorter time.

FIG. 1 is a schematic perspective view of a first embodiment of the metal jewelry of the present invention, in which the diamond-shaped metal jewelry is used as a hook-type earring. FIG. 2 is a schematic front view of the metal jewelry shown in FIG. 1 . FIG. FIG. 13 is a schematic perspective view of a second embodiment of the diamond-shaped metal jewelry used as a hook-type earring, showing another embodiment of the metal jewelry of the present invention. FIG. 13 is a schematic perspective view of a third embodiment of the metal jewelry of the present invention, in which the ring-shaped metal jewelry is used as a hook-type earring.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the metal jewelry of the present invention will be described in detail with reference to the drawings.
1 to 4 show an embodiment of the metallic accessory of the present invention, and explain a first embodiment in which a diamond-shaped metallic accessory 11 is used as a hook-type earring.
That is, a round ring 13 is attached to the rear end of an inverted U-shaped hook-type pin 12. On the other hand, a round ring 14 is also attached to the upper end of a diamond-shaped metal accessory 11, and by connecting this round ring 14 to the round ring 13 attached to the hook-type pin 12, it can be used as a hook-type earring.

The diamond-shaped metal accessory 11 has a plate-like body 15 that has been processed to have a wavy surface shape, and a bumpy pattern made up of extremely fine wires 17 is formed on the wavy surface shape 16 of the plate-like body 15.
Incidentally, the present invention is also characterized in that the metal ornament 11 is produced by casting, that is, by a casting method using resin wax.

It is desirable that the plate-like body 15 constituting the metal ornament 11 has a thickness of 1.0 mm or less, and more desirably 0.3 mm or less. In other words, by forming the plate-like body 15 to have a wavy surface shape 16, even a very thin plate obtained by casting can have a practical strength.

In the metal jewelry 11, the extremely fine wires 17 constituting the uneven pattern formed on the wavy surface shape 16 of the plate-like body 15 can have a width of 0.2 mm or less and a height of 0.2 mm or less.
In this way, by adding extremely fine lines 17 that form a concave-convex pattern to the wavy surface shape 16 of the plate-like body 15, the light reflection intensity is varied, and further visual depth (contrast difference) is obtained on the surface compared to the case where only the wavy surface shape 16 is formed, resulting in a much better appearance.

In the first embodiment of Figs. 1 to 3, the thin lines 17 are straight in the vertical direction, but this is not limiting, and the thin lines 17 can be oblique lines that are not vertical, or curved lines that are not straight. Of course, as shown in the second embodiment of Fig. 4, the thin lines 17 can be formed in a direction different from the longitudinal direction of the wavy ridges 16a of the wavy surface shape 16 of the plate-like main body 15.

Next, FIG. 5 shows another embodiment of the metal accessory of the present invention, and explains the case where a ring-shaped metal accessory 21 is used as a hook-type earring.
That is, a round ring 23 is attached to the rear end of an inverted U-shaped hook-type pin 22. On the other hand, a round ring 24 is also attached to the upper end of a ring-shaped metal accessory 21, and by connecting this round ring 24 to the round ring 23 attached to the hook-type pin 22, it can be used as a hook-type earring.

The ring-shaped metal ornament 21 comprises a plate-like body 25 which is machined to have a wavy surface shape 26 with the central portion of the ring shape protruding in the width direction, and a concave-convex pattern made of extremely fine lines 27 is formed on the wavy surface shape 26 of the plate-like body 25.
In this embodiment as well, the metal ornament 21 is produced by casting, that is, by a casting method using resin wax.

The plate-like body 25 constituting the metal ornament 21 has a thickness of 1.0 mm or less, preferably 0.3 mm or less. In other words, by forming the plate-like body 25 to have a wavy surface shape 26, even a very thin plate obtained by casting can have a practical strength.

In the metal accessory 21, the extremely fine wires 27 constituting the uneven pattern formed on the wavy surface shape 26 of the plate-like body 25 can have a width of 0.2 mm or less and a height of 0.2 mm or less.
In this way, by adding extremely fine lines 27 that form a bumpy pattern to the wavy surface shape 26 of the plate-like body 25, the light reflection intensity is varied, and further visual depth (contrast difference) is obtained on the surface compared to the case where only the wavy surface shape 26 is provided, resulting in a much better appearance.

In this embodiment, the extremely fine thin lines 27 constituting the uneven pattern formed on the wavy surface shape 26 of the plate-like body 25 are straight in the vertical direction, but this is not limited to the above shape, and the thin lines 27 can be oblique lines that are not vertical, or curved lines that are not straight. Of course, it is also possible to form the thin lines 27 so as to follow the wavy ridge lines 26a of the wavy surface shape 26 of the ring-shaped plate-like body 25 (not shown).

In FIG. 5, reference numeral 31 denotes a jewel setting attached to the inner peripheral surface of the ring-shaped metal accessory 21, and this jewel setting 31 has prongs 32 to which a jewel 33 such as a diamond is attached.

The metallic ornament of the present invention is constructed as described above, and it goes without saying that it can be used in a variety of applications as long as the gist of the invention is not altered.
That is, the present invention can be easily applied not only to the earrings described in detail above, but also to necklaces, brooches, bracelets and other accessories.

11 Diamond-shaped metal jewelry
Reference Signs List 12 Pin 13 Circular ring 14 Circular ring 15 Plate-shaped body 16 Wavy surface shape 16a Wavy ridge line 17 Thin wire 21 Ring-shaped metal accessory
22 pin 23 ring 24 ring 25 plate-shaped body 26 wavy surface shape 26a wavy ridgeline 27 thin wire 31 jewel setting 32 prong 33 jewel

Claims (1)

The metal accessory is characterized in that it comprises a plate-like body processed to have a wavy surface shape, the thickness of the plate-like body being 1.0 mm or less, preferably 0.3 mm or less , and the wavy surface shape of the plate-like body is formed with extremely fine wires each having a width of 0.2 mm or less and a height of 0.2 mm or less .

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