JP2017217309A - Pierced earring and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pierced earring being easily processed and capable of securing the strength, and a manufacturing method thereof.SOLUTION: A pierced earring 1 includes: a pedestal 5 for fixing a decoration part; a pin 6 projecting from the pedestal 5 and penetrating through an earlobe; and a fastener for locking a tip end of the pin 6. The pin 6 includes a metal core material 7, and a resin surface material 8 for covering the surface of the core material 7, where base ends of the core material 7 and the surface material 8 extend inside the pedestal 5 and are fixed to the pedestal 5.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a pierced earring and a manufacturing method thereof.

  2. Description of the Related Art Conventionally, a pierce composed of a pin member and a locking tool that is locked to the distal end portion of the pin member is known (see, for example, Patent Document 1). In this piercing, the pin member has an elongated rod-shaped pin shaft body and a receiving member having a diameter increased in a flange shape at one end portion of the pin shaft body, from the receiving member to the axis of the pin shaft body. A screw hole is formed toward the screw hole, and a decorative article such as a jewel is fixed to the receiving member by screwing the screw into the screw hole. In this piercing, the pin shaft body of the pin member and the receiving member are integrally formed of synthetic resin such as polycarbonate, so that metal is not touched by the earlobe, thereby eliminating metal allergy.

JP-A-8-10017

  However, in the conventional piercing as described in Patent Document 1, since the screw hole is formed from the receiving member toward the pin shaft body, fine processing for forming the screw hole is difficult, There is a problem that the thickness of the base end portion of the pin shaft body is reduced and the strength is lowered.

  An object of the present invention is to provide a pierced earring that can be easily processed and can ensure strength, and a method for manufacturing the pierced earring.

  A pierced earring of the present invention is a pierced earring comprising: a base for fixing the decorative part; a pin that protrudes from the base and penetrates the earlobe; and a fastener that is locked to the tip of the pin. The pin has a metal core material and a resin surface material covering the surface of the core material, and a base end portion of the core material and the surface material extends into the pedestal and extends to the pedestal. It is characterized by having been fixed to.

  According to the present invention, the pin that penetrates the earlobe has the core material and the surface material, so that the surface material made of resin comes into contact with the earlobe, and metal allergy can be prevented. Furthermore, the surface of the metal core material is covered with a resin surface material, and the core material and the base material of the surface material extend and are fixed inside the pedestal, thereby preventing the strength of the pin from being lowered. Can do. Moreover, since the screw hole is not formed in the pin member like the conventional piercing, it can process easily and can suppress manufacturing cost.

  In the present invention, the core material is formed to include a shaft portion extending along a protruding direction from the pedestal and a head portion having a diameter enlarged at a base end portion of the shaft portion, and the surface material. Is formed to have a cylindrical portion covering the periphery of the shaft portion and a flange portion covering the periphery of the head portion, and the head portion of the core material and the flange portion of the surface material are inside the pedestal. It is preferable to be fixed on.

  According to such a configuration, since the head portion of the core material and the collar portion of the surface material are fixed inside the pedestal, the core material and the surface material are prevented from coming out of the pedestal, and the pin and the pedestal are securely connected. Can be fixed.

  In the present invention, it is preferable that the surface material is provided so as to cover the tip portion of the shaft portion, or is provided with the tip portion of the shaft portion exposed.

  According to such a configuration, the surface material is provided so as to cover the tip of the shaft portion, so that the metal of the core material does not touch the earlobe, and metal allergy can be further suppressed. On the other hand, if the tip of the shaft is exposed and a surface material is provided, the fastener is locked to the metal pin by locking the fastener to the exposed tip of the shaft. The locking strength can be increased.

  The method for producing a pierced earring according to the present invention is a method for producing any one of the above pierced earrings, wherein the molten resin is filled in the first cavity in a state where the core material is installed in the first cavity of the mold. Then, the surface material is molded on the surface of the core material to manufacture the pin, and the molten material is filled into the second cavity in a state where the base end portion of the pin is installed in the second cavity of the mold. The pedestal is formed integrally with the base end portion of the pin.

  According to such a configuration, a pin is manufactured by integrally molding a surface material on the surface of the core material by injection molding using a mold, and then a base is integrally molded at the base end portion of the pin. The pin and the pedestal can be easily fixed and the earrings can be manufactured at a low cost.

  The method for producing a pierced earring according to the present invention is a method for producing any one of the above pierced earrings, wherein the core material made of metal and the surface material made of resin are respectively molded into the surface material. The pin is manufactured by inserting the core material, and filling the cavity with a molten material in a state where the base end portion of the pin is installed in the cavity of the mold, the base is integrated with the base end portion of the pin. It is characterized by molding.

  According to such a configuration, the pin and the pedestal can be easily formed by inserting the individually molded core material into the surface material to manufacture the pin, and then integrally forming the pedestal at the base end portion of the pin by injection molding. And earrings can be manufactured at low cost.

The side view which shows the pierced earring which concerns on one Embodiment of this invention Sectional drawing showing the earrings The figure explaining the manufacturing process of the said earrings Sectional drawing which shows a part of pierced earring which concerns on the modification of this invention

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 and 2 are views showing a pierced earring according to an embodiment of the present invention, FIG. 1 is a side view of the pierced earring, and FIG. 2 is a cross-sectional view of the pierced earring.

As shown in FIGS. 1 and 2, the pierced earring 1 includes a pierced body 2, a fastener 3, and a decorative portion 4, and is attached to the earlobe M.
In addition, the decoration part 4 may be fixed to the base 5 by adhesion | attachment, may be attached to the base 5 via the chain, and may be attached to positions other than the front side of the base 5. . Further, the decorative portion 4 is not limited to a spherical shape as shown in FIG. Further, the decorative portion 4 may be one in which a jewel or pearl or the like separate from the pedestal 5 is fixed to the pedestal 5, or may be formed integrally with the pedestal 5.

  The pierce body 2 includes a pedestal 5 for fixing the decorative portion 4 and a pin 6 protruding from the pedestal 5. The pierced earring 1 is inserted into the earlobe M by penetrating the pin 6 through the earlobe M, locking the fastener 3 at the tip of the pin 6, and sandwiching the earlobe M between the base 5 and the fastener 3. It has become.

  The pedestal 5 is a metal molded product, and has a smooth hemispherical ear pad surface 51 that abuts the ear lobe M, and a mounting surface for mounting the decorative portion 4 on the opposite side of the ear pad surface 51. 52. The pedestal 5 has a holding portion 53 that is formed as a space in the pedestal 5 and holds the proximal end portion of the pin 6, and an opening portion 54 that is opened to the ear pad surface 51 so as to project the pin 6 from the holding portion 53. And are provided. The metal material of the pedestal 5 may be a single metal such as gold, silver, or platinum, or may be an alloy composed of a plurality of types of metals, but is unlikely to cause metal allergies such as gold or platinum. A material is preferable.

  The pin 6 includes a metal core material 7 and a resin surface material 8 that covers the surface of the core material 7. As shown in FIG. 2, the pin 6 protrudes from a disk-shaped fixing portion 61 that is held and fixed by a holding portion 53 of the pedestal 5 and an opening 54 of the pedestal 5 having a smaller diameter than the fixing portion 61. And a projecting portion 62 that extends. The length from which the pin 6 protrudes from the ear pad surface 51 of the base 5 should just be the extent which the fastener 3 can be latched to the front-end | tip part which penetrated the earlobe M.

  The core member 7 is made of a metal such as a titanium alloy, and has a needle-like shaft portion 71 extending in the protruding direction from the pedestal 5 and a disk-shaped head having a diameter enlarged at the base end portion of the shaft portion 71. And a portion 72. The shaft portion 71 of the core material 7 is formed to be tapered toward the tip. The head 72 is formed in a disc shape.

  The surface material 8 is made of a thermoplastic resin such as polycarbonate, or a soft resin such as silicone rubber or thermoplastic elastomer, and includes a cylindrical portion 81 that covers the periphery of the shaft portion 71 of the core material 7 and a head portion 72 of the core material 7. And a tip portion 83 that covers the tip of the shaft portion 71.

  The shaft portion 71 of the core material 7 is integrally fixed inside the cylindrical portion 81 and the tip portion 83 of the surface material 8. The head 72 and the collar 82, which are the base ends of the core material 7 and the surface material 8, extend inside the pedestal 5, are held by the holding portion 53, and are fixed to the pedestal 5.

Next, the manufacturing method of the pierced earring 1 is demonstrated based on FIG.
3A and 3B are diagrams showing a method of manufacturing the pierce earring 1, wherein FIG. 3A shows a manufacturing procedure of the pin 6, FIG. 3B shows a manufacturing procedure of the pin 6 following (A), and FIG. These are figures which show the manufacturing method of the base 5. FIG.

  The piercing body 2 of the piercing earring 1 is manufactured by a molding apparatus 10 that integrally molds the core material 7 and the surface material 8 of the pin 6 and integrally molds the pedestal 5 on the pin 6. The molding apparatus 10 includes a first mold 11 for integrally molding the core material 7 and the surface material 8 of the pin 6, a second mold 12 for integrally molding the base 5 at the base end portion of the pin 6, It has.

  The first mold 11 has a first cavity 13 for installing the core material 7 and molding the surface material 8, and a first supply path 14 for filling the first cavity 13 with molten resin. Is formed. The second mold 12 is provided with a base end portion of the pin 6 and a second cavity 15 for molding the pedestal 5, and a second supply path 16 for filling the second cavity 15 with a molten metal. , Is formed.

  As a manufacturing procedure of the pierced earring 1 by the molding apparatus 10, first, as shown in FIG. 3 (A), the core material 7 is installed in the first cavity 13 of the first mold 11 and shown in FIG. 3 (B). As described above, the first cavity 13 is filled with the molten resin from the first supply path 14. As a result, the resin in the first cavity 13 covers the core material 7 and the surface material 8 is integrally formed to manufacture the pin 6. And the pin 6 is taken out from the 1st metal mold | die 11, and while cutting off the resin of the 1st supply path 14 part, a burr | flash etc. are shaved off.

  Next, the base end portion of the pin 6 is installed in the second cavity 15 of the second mold 12 and, as shown in FIG. 3C, the molten metal is filled into the second cavity 15 from the second supply path 16. . Thereby, the metal in the second cavity 15 covers the base end portion of the pin 6 and the pedestal 5 is integrally formed, whereby the pierce body 2 is manufactured. Then, the metal in the second supply path 16 is cut off, and burrs and the like are scraped off. Then, the decoration part 4 is fixed to the base 5, and the manufacture of the earrings 1 is completed. In addition, as a material which shape | molds the base 5, not only a molten metal but molten resin may be sufficient.

According to the present embodiment as described above, the following operations and effects can be achieved.
(1) In the pierced earring 1, since the pin 6 penetrating the earlobe M has the core material 7 and the surface material 8, the earlobe M comes into contact with the resin surface material 8, thereby preventing metal allergy. it can. Further, the surface of the metal core material 7 is covered with a resin surface material 8, and the base end portions of the core material 7 and the surface material 8 extend into the pedestal 5 and are fixed. Strength reduction can be prevented.

(2) By injection molding, the core material 7 and the surface material 8 are integrally formed to manufacture the pin 6, and the base end portion of the pin 6 and the base 5 are integrally formed to manufacture the pierce body 2. Therefore, processing can be performed easily and the manufacturing cost of the earring 1 can be suppressed.

(3) Since the head portion 72 of the core material 7 and the flange portion 82 of the surface material 8 in the pin 6 are held and fixed to the holding portion 53 of the base 5, the core material 7 and the surface material 8 come out of the base 5. This can prevent the pin 6 and the pedestal 5 from being fixed.

(4) Since the surface material 8 is provided so as to cover the tip portion of the shaft portion 71 of the core material 7, the metal of the core material 7 does not touch the earlobe M, and metal allergy can be further suppressed. Furthermore, since the shaft portion 71 of the core material 7 is provided up to the tip portion of the pin 6, the strength of the pin 6 can be increased and it can be made difficult to break.

[Modification of Embodiment]
It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
For example, in the embodiment, the disk-shaped fixing unit 61 is formed at the base end portion of the pin 6, and the fixing unit 61 is held by the holding unit 53 of the pedestal 5. The shape is not limited and may be spherical or polygonal. Further, the fixing portion 61 is not limited to the one having a larger diameter than the protruding portion 62, and the entire pin may be formed in a single rod shape without a step between the protruding portion and the fixing portion.

  In the above embodiment, the core material 7 has the shaft portion 71 and the head portion 72, and the surface material 8 has the cylindrical portion 81 and the flange portion 82, but the core material has the head portion. It does not have, and the surface material may not be provided with a collar part, and may each be formed linearly. Further, the core member may be formed with a head portion, and the cylindrical portion may be formed up to the position of the head portion of the core member without forming the collar portion on the surface material.

  In the embodiment, the tip 83 of the surface material 8 is formed so as to cover the tip of the core material 7, but the surface material 8 may be provided with the tip of the shaft portion exposed. Specifically, like the pierce main body 2A of the modified example shown in FIG. 4, the surface material 8 covers the middle of the shaft portion 71 of the core material 7, and the tip portion of the shaft portion 7 is exposed. Also good.

  In the said embodiment, although the pin 6 was manufactured by insert-molding the core material 7 and the surface material 8 using the 1st metal mold | die 11, the manufacturing method of the pin 6 is not restricted to insert molding. That is, the metal core material 7 and the resin surface material 8 may be formed as separate bodies, and the core material 7 may be inserted into the surface material 8 to manufacture the pin 6. At this time, the core material 7 and the surface material 8 may be fixed to each other with an adhesive.

  As described above, the present invention can be widely applied to the pierced earrings that can be easily processed and can secure the strength, and the manufacturing method thereof.

DESCRIPTION OF SYMBOLS 1 Pierce earring 2,2A Pierce main body 3 Fastening piece 4 Decoration part 5 Base 6 Pin 7 Core material 8 Surface material 11 1st metal mold 12 Second metal mold 13 1st cavity 15 2nd cavity 71 Shaft part 72 Head 81 Cylinder -Shaped part 82 buttocks M earlobe

Claims (5)

A pierced earring comprising a pedestal for fixing the decorative portion, a pin protruding from the pedestal and penetrating through the earlobe, and a fastener locked to the tip of the pin,
The pin has a metal core and a resin surface covering the surface of the core,
A pierced earring characterized in that base ends of the core member and the surface member extend inside the pedestal and are fixed to the pedestal. The pierced earring according to claim 1,
The core member is formed to have a shaft portion extending along a protruding direction from the pedestal, and a head portion whose diameter is increased at a base end portion of the shaft portion,
The surface material is formed to have a cylindrical part that covers the periphery of the shaft part, and a flange part that covers the periphery of the head part,
A pierced earring, wherein a head portion of the core member and a collar portion of the surface member are fixed inside the pedestal. The pierced earring according to claim 1 or 2,
Piercing earrings characterized in that the surface material is provided so as to cover the tip portion of the shaft portion or the tip portion of the shaft portion is exposed. A manufacturing method for manufacturing the pierced earring according to any one of claims 1 to 3,
By filling the first cavity with molten resin in a state where the core material is installed in the first cavity of the mold, the surface material is molded on the surface of the core material to produce the pin,
The pierce is formed integrally with the base end portion of the pin by filling the second cavity with a molten material in a state where the base end portion of the pin is installed in the second cavity of the mold. Earring manufacturing method. A manufacturing method for manufacturing the pierced earring according to any one of claims 1 to 3,
Each of the metal core material and the resin surface material is molded, and the pin is manufactured by inserting the core material into the surface material,
A method of manufacturing a pierce earring, wherein the base is molded integrally with the base end portion of the pin by filling the cavity with a molten material in a state where the base end portion of the pin is placed in a cavity of a mold. .

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