JP3266480B2 - Earrings - Google Patents
EarringsInfo
- Publication number
- JP3266480B2 JP3266480B2 JP27418195A JP27418195A JP3266480B2 JP 3266480 B2 JP3266480 B2 JP 3266480B2 JP 27418195 A JP27418195 A JP 27418195A JP 27418195 A JP27418195 A JP 27418195A JP 3266480 B2 JP3266480 B2 JP 3266480B2
- Authority
- JP
- Japan
- Prior art keywords
- needle
- catch
- tip
- insertion hole
- curvature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Adornments (AREA)
Description
【０００１】[0001]
【発明が属する技術分野】本発明はピアスに関し、特に
針部をセラミックで形成すると共に、キャッチを樹脂で
形成したピアスに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piercing, and more particularly to a piercing in which a needle portion is formed of ceramic and a catch is formed of resin.
【０００２】[0002]
【従来の技術】ピアスは、図２に示すように、前耳接触
部１ａを有する針部１を人体の耳たぶなどに開けた孔に
挿入して、この針部１の前耳接触部１ａとは反対側に、
キャッチ２を挿着して前耳接触部１ａとキャッチ２で人
体の耳たぶを挟むことにより使用される。2. Description of the Related Art As shown in FIG. 2, a pierced earring is formed by inserting a needle 1 having a front ear contacting portion 1a into a hole formed in an earlobe of a human body and the like. On the other side,
It is used by inserting the catch 2 and sandwiching the earlobe of the human body between the front ear contact portion 1a and the catch 2.
【０００３】前耳接触部１ａを有する針部１は、人体に
為害性のない金属やセラミックなどで構成され、キャッ
チ２は弾性構造を有する金属や弾性を有する樹脂などで
形成されるが、このキャッチ２は、人体への為害性、構
造の単純化、あるいは針部１への取付の容易性などの点
では、金属よりも樹脂の方が有利である。The needle portion 1 having the front ear contact portion 1a is made of metal or ceramic which is harmless to the human body, and the catch 2 is made of metal having elastic structure or resin having elasticity. For the catch 2, resin is more advantageous than metal in terms of harm to the human body, simplification of the structure, or ease of attachment to the needle 1.
【０００４】[0004]
【発明が解決しようとする課題】ところが、キャッチ２
を弾性を有する樹脂で形成する場合、針部１の先端角部
が曲面状に形成されていない場合、針部１をキャッチ２
に挿着する際に、針部１の先端角部がキャッチ２の針挿
着孔２ａに引っ掛かり、針挿着孔２ａにスムーズに挿着
できないと共に、針挿着孔２ａが損傷しやすくなるとい
う問題があった。特に、キャッチ２の針挿着孔２ａは針
部１の外径よりも小さく形成されることから、上記問題
は特に顕著になる。However, catch 2
Is formed of a resin having elasticity, and if the corner of the tip of the needle 1 is not formed into a curved surface, the needle 1 is caught 2
When it is inserted into the needle, the tip corner of the needle portion 1 is caught in the needle insertion hole 2a of the catch 2 and cannot be smoothly inserted into the needle insertion hole 2a, and the needle insertion hole 2a is easily damaged. There was a problem. In particular, since the needle insertion hole 2a of the catch 2 is formed smaller than the outer diameter of the needle portion 1, the above problem becomes particularly remarkable.
【０００５】一方、針部１をＫ−１８などの金属で形成
する場合は、針部１の先端部を半球状に形成して、上述
のような問題が発生することを防止しているが、針部１
をセラミックで形成する場合は、加工性の点から半球状
に形成するのは極めて困難である。On the other hand, when the needle 1 is made of a metal such as K-18, the tip of the needle 1 is formed in a hemispherical shape to prevent the above-mentioned problem from occurring. , Needle part 1
When is made of ceramic, it is extremely difficult to form a hemispherical shape from the viewpoint of workability.
【０００６】本発明は、このような従来技術の問題点に
鑑みて発明されたものであり、針部１をセラミックで形
成した場合に、この針部をキャッチに挿着する際に、針
部の先端角部がキャッチに引っ掛かったり、キャッチの
針挿着孔が損傷し易くなるという問題を解消することを
目的とする。The present invention has been made in view of the above-mentioned problems of the prior art. When the needle portion 1 is made of ceramic, when the needle portion is inserted into a catch, the needle portion 1 is formed. It is an object of the present invention to solve the problem that the corner of the tip of the catch is caught by the catch or the needle insertion hole of the catch is easily damaged.
【０００７】[0007]
【課題を解決するための手段】 上記目的を達成するた
めに、本発明に係るピアスでは、針部をセラミックで形
成すると共に、この針部が挿着される針挿着孔を有する
キャッチをシリコン樹脂で形成したピアスにおいて、前
記針部の先端角部を０．０５ｍｍ〜０．２６ｍｍの曲率
半径を有する曲面状に形成すると共に、この針部の先端
中央部を平坦状に形成し、前記キャッチの針挿着孔の内
径を前記針部の先端中央部の平坦状部よりも大きく、且
つ針部の外形よりも０．１ｍｍ以上小さく形成した。Means for Solving the Problems In order to achieve the above object, in a piercing according to the present invention, a needle part is formed of ceramic, and a catch having a needle insertion hole into which the needle part is inserted is formed of silicon. In a pierce formed of resin, the tip corner of the needle is formed into a curved surface having a radius of curvature of 0.05 mm to 0.26 mm, and the center of the tip of the needle is formed flat, and the catch is formed. The inner diameter of the needle insertion hole is formed larger than the flat portion at the center of the tip of the needle portion and smaller than the outer shape of the needle portion by 0.1 mm or more.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施形態を添付図
面に基づき詳細に説明する。図１は、本発明に係るピア
スの一実施形態を示す断面図であり、１は針部、２はキ
ャッチである。Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing one embodiment of a piercing according to the present invention, wherein 1 is a needle portion, and 2 is a catch.
【０００９】針部１はセラミック部材で形成される。す
なわち、例えば酸化イットリウム（Ｙ2 Ｏ3 ）、酸化カ
ルシウム（ＣａＯ2 ）、或いは酸化マグネシウム（Ｍｇ
Ｏ）などの部分安定化剤を少量添加した酸化ジルコニウ
ム（ＺｒＯ2 ）、焼結助剤としての酸化マグネシウム
（ＭｇＯ）や酸化カルシウム（ＣａＯ）を少量含有する
酸化アルミニウム（Ａｌ2 Ｏ3 ）、炭化ケイ素（Ｓｉ
Ｃ）、あるいは窒化ケイ素（Ｓｉ3 Ｎ4 ）などで構成さ
れる。セラミック部材は化学的に極めて安定しており、
人体への為害性は全くない。The needle portion 1 is formed of a ceramic member. That is, for example, yttrium oxide (Y 2 O 3 ), calcium oxide (CaO 2 ), or magnesium oxide (Mg
Zirconium oxide (ZrO 2 ) containing a small amount of a partial stabilizer such as O), aluminum oxide (Al 2 O 3 ) containing a small amount of magnesium oxide (MgO) or calcium oxide (CaO) as a sintering aid, Silicon (Si
C) or silicon nitride (Si 3 N 4 ). Ceramic members are extremely stable chemically,
No harm to human body.
【００１０】キャッチ２は、例えばシリコン樹脂のよう
な弾性を有する樹脂で形成され、中央部には、針部１が
挿着される針挿着孔２ａが形成されている。The catch 2 is formed of an elastic resin such as a silicone resin, for example, and has a needle insertion hole 2a in the center thereof into which the needle 1 is inserted.
【００１１】針部１は、直径０．８ｍｍ〜１ｍｍ、長さ
１２ｍｍ程度の棒状に形成され、先端角部１ｂは、０．
０５ｍｍ〜０．３ｍｍの曲率半径Ｒを有する曲面状に形
成されていると共に、先端中央部１ｃは平坦状に形成さ
れている。The needle portion 1 is formed in a rod shape having a diameter of 0.8 mm to 1 mm and a length of about 12 mm.
It is formed in a curved shape having a radius of curvature R of 05 mm to 0.3 mm, and the front end central portion 1c is formed in a flat shape.
【００１２】この先端角部１ｂを０．０５ｍｍ〜０．３
ｍｍの曲率半径Ｒを有する曲面状に形成するには、セラ
ミック原料を押出成形して棒状に形成して焼結させた後
に、この棒状体をバレル研磨することにより形成され
る。すなわち、水中にセラミック原料を焼結させた棒状
体とグリーンカーボランダムを投入して、遠心バレル研
磨することにより形成される。例えば棒状体をジルコニ
アセラミックで形成した場合、バレル研磨を２時間行う
と先端角部１ｂは０．０５ｍｍの曲率半径Ｒとなり、バ
レル研磨を５時間行うと先端角部１ｂは０．１０ｍｍの
曲率半径Ｒとなり、１０時間行うと０．２１ｍｍの曲率
半径Ｒとなり、１６時間行うと０．２６ｍｍの曲率半径
Ｒとなり、２０時間行うと０．２８ｍｍの曲率半径Ｒと
なり、２８時間行うと０．３０ｍｍの曲率半径Ｒとな
る。なお、３０時間行っても０．３０ｍｍの曲率半径Ｒ
は変わらない。すなわち、針部１の先端角部１ｂを０．
２６ｍｍの曲率半径Ｒの曲面状には比較的短時間で形成
できるが、０．２６ｍｍを越える曲率半径Ｒの曲面状に
形成するには長時間かかり、３０時間以上バレル研磨を
行っても、棒状体の直径Ｄ1 が小さくなるだけで先端角
部１ｂの曲率半径Ｒは変わらない。したがって、針部１
をジルコニアセラミックで形成する場合、先端角部１ｂ
を曲面状に形成するとしてもその曲率半径Ｒは０．３ｍ
ｍ以下になり、さらに製造工程の短縮化の点からは０．
２６ｍｍ以下が望ましい。The tip corner 1b is set at 0.05 mm to 0.3 mm.
In order to form a curved surface having a radius of curvature R of mm, the ceramic raw material is formed by extrusion molding into a rod shape, followed by sintering, and then barrel-polishing the rod-shaped body. That is, it is formed by charging a rod-shaped body obtained by sintering a ceramic raw material in water and green carborundum and subjecting it to centrifugal barrel polishing. For example, when the bar is formed of zirconia ceramic, the tip corner 1b has a radius of curvature R of 0.05 mm when barrel polishing is performed for 2 hours, and the tip corner 1b has a radius of curvature of 0.10 mm when barrel polishing is performed for 5 hours. R, the radius of curvature R becomes 0.21 mm after 10 hours, 0.26 mm after 16 hours, 0.28 mm after 20 hours, and 0.30 mm after 28 hours. The radius of curvature R is obtained. The radius of curvature R of 0.30 mm even after 30 hours.
Does not change. That is, the tip corner 1b of the needle portion 1 is set at 0.
It can be formed in a relatively short time on a curved surface having a radius of curvature R of 26 mm. However, it takes a long time to form a curved surface having a radius of curvature R exceeding 0.26 mm. curvature only at the tip corner portion 1b the diameter D 1 of the body is smaller radius R is unchanged. Therefore, the needle 1
Is made of zirconia ceramic, the tip corner 1b
Is formed into a curved surface, the curvature radius R is 0.3 m.
m from the viewpoint of shortening the manufacturing process.
It is desirably 26 mm or less.
【００１３】一方、キャッチ２をシリコンで形成する場
合、このキャッチ２の針挿着孔２ａの内径Ｄ2 は、針部
１の外径Ｄ1 よりも小さければ保持できるが、針部１の
外径Ｄ1 よりも０．１ｍｍ以上小さくした場合、強固に
保持できる。すなわち、キャッチ２の針挿着孔２ａの内
径Ｄ2 は、針部１の外径Ｄ1 よりも０．１ｍｍ以上小さ
く形成することが望ましく、針部１をキャッチ２に引っ
掛かりなくスムーズに挿着できるようにするためには、
針部１の先端中央部の平坦状部１ｃは少なくともキャッ
チ２の内径Ｄ2 よりも小さくしなければならない。した
がって、針部１の先端角部１ｂは最小でも０．０５ｍｍ
の曲率半径Ｒとなるように形成しなければならない。On the other hand, when the catch 2 is formed of silicon, the inner diameter D 2 of the needle insertion hole 2 a of the catch 2 can be held if it is smaller than the outer diameter D 1 of the needle portion 1. If smaller than 0.1mm than the diameter D 1, it can be firmly held. That is, the inner diameter D 2 of the needle insertion hole 2a of the catch 2 is desirably 0.1mm formed smaller than than the outer diameter D 1 of the needle part 1, inserted smoothly without being caught the needle portion 1 to the catch 2 To be able to do
Flat portion 1c of the central tip portion of the needle portion 1 must be smaller than the inner diameter D 2 of at least catch 2. Therefore, the tip corner 1b of the needle 1 is at least 0.05 mm.
Must be formed to have a radius of curvature R of
【００１４】[0014]
【発明の効果】以上のように、本発明に係るピアスによ
れば、針部をセラミックで形成すると共に、この針部が
挿着される針挿着孔を有するキャッチをシリコン樹脂で
形成したピアスにおいて、上記針部の先端角部を０．０
５ｍｍ〜０．２６ｍｍの曲率半径を有する曲面状に形成
すると共に、この針部の先端中央部を平坦状に形成し、
上記キャッチの針挿着孔の内径を前記針部の先端中央部
の平坦状部よりも大きく、且つ針部の外形よりも０．１
ｍｍ以上小さく形成したことから、針部をセラミック部
材で形成し、キャッチをシリコン樹脂で形成した場合で
も、針部をキャッチにスムーズかつ強固に挿着できる。
また、針部の先端中央部が平坦であることから、安全且
つ製造が容易なピアスとなる。As described above, according to the pierced earring according to the present invention, the needle portion is formed of ceramic, and the catch having the needle insertion hole into which the needle portion is inserted is formed of silicone resin. In the above, the tip corner of the needle portion is 0.0
The needle is formed into a curved surface having a radius of curvature of 5 mm to 0.26 mm, and the center of the tip of the needle is formed flat.
The inner diameter of the needle insertion hole of the catch is larger than the flat portion at the center of the distal end of the needle portion, and 0.1 mm from the outer shape of the needle portion.
Since the needle portion is formed smaller than mm, the needle portion can be smoothly and firmly inserted into the catch even when the needle portion is formed of a ceramic member and the catch is formed of silicone resin.
Further, since the center of the tip of the needle portion is flat, the piercing is safe and easy to manufacture.
【図１】本発明に係るピアスの一実施形態を示す図であ
る。FIG. 1 is a diagram showing one embodiment of a piercing according to the present invention.
【図２】従来のピアスを示す図である。FIG. 2 is a diagram showing a conventional piercing.
１・・・針部、２・・・キャッチ、２ａ・・・針挿着孔 DESCRIPTION OF SYMBOLS 1 ... needle part, 2 ... catch, 2a ... needle insertion hole
Claims (1)
の針部が挿着される針挿着孔を有するキャッチをシリコ
ン樹脂で形成したピアスにおいて、前記針部の先端角部
を０．０５ｍｍ〜０．２６ｍｍの曲率半径を有する曲面
状に形成すると共に、この針部の先端中央部を平坦状に
形成し、前記キャッチの針挿着孔の内径を前記針部の先
端中央部の平坦状部よりも大きく、且つ針部の外形より
も０．１ｍｍ以上小さく形成したことを特徴とするピア
ス。A needle is formed of ceramic, and a catch having a needle insertion hole into which the needle is inserted is made of silicon.
In the case of a pierce formed of a resin, the corner of the tip of the needle portion is 0.05 mm to 0.1 mm. The needle is formed in a curved surface having a radius of curvature of 26 mm, the center of the tip of the needle is formed flat, and the inner diameter of the needle insertion hole of the catch is set to be smaller than the flat portion of the center of the tip of the needle. A pierced earring characterized in that it is large and 0.1 mm or more smaller than the outer shape of the needle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27418195A JP3266480B2 (en) | 1995-10-23 | 1995-10-23 | Earrings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27418195A JP3266480B2 (en) | 1995-10-23 | 1995-10-23 | Earrings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09108013A JPH09108013A (en) | 1997-04-28 |
| JP3266480B2 true JP3266480B2 (en) | 2002-03-18 |
Family
ID=17538176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27418195A Expired - Fee Related JP3266480B2 (en) | 1995-10-23 | 1995-10-23 | Earrings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3266480B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000051323A (en) * | 1999-01-20 | 2000-08-16 | 배석만 | Means for earring formed with conductive PVC resin |
-
1995
- 1995-10-23 JP JP27418195A patent/JP3266480B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09108013A (en) | 1997-04-28 |
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