JPH09108013A - Pierced earring - Google Patents
Pierced earringInfo
- Publication number
- JPH09108013A JPH09108013A JP27418195A JP27418195A JPH09108013A JP H09108013 A JPH09108013 A JP H09108013A JP 27418195 A JP27418195 A JP 27418195A JP 27418195 A JP27418195 A JP 27418195A JP H09108013 A JPH09108013 A JP H09108013A
- Authority
- JP
- Japan
- Prior art keywords
- needle
- catch
- needle portion
- tip
- 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.)
- Granted
Links
Landscapes
- Adornments (AREA)
Abstract
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 pierce, and more particularly to a pierce in which a needle portion is made of ceramic and a catch is made 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 has a needle portion 1 having a front ear contact portion 1a inserted into a hole formed in an earlobe of a human body so that the needle portion 1 can be connected to the front ear contact portion 1a. 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 an elastic structure or resin having elasticity. The catch 2 is preferably made of resin rather than metal in terms of harm to the human body, simplification of structure, and ease of attachment to the needle portion 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。[Problems to be Solved by the Invention] However, catch 2
When the needle portion 1 is made of a resin having elasticity and the tip corner portion of the needle portion 1 is not formed into a curved surface, the needle portion 1 is caught 2
It is said that the tip corner portion of the needle portion 1 is caught in the needle insertion hole 2a of the catch 2 when it is inserted into the needle 2, and the needle insertion hole 2a cannot be smoothly inserted, 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 portion 1 is made of a metal such as K-18, the tip portion of the needle portion 1 is formed in a hemispherical shape to prevent the above problems from occurring. , Needle part 1
When it is made of ceramic, it is extremely difficult to form it in a hemispherical shape in terms 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, the needle portion is inserted in the catch. SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems that the tip corners of the hook are caught in the catch and 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〜０．３ｍｍ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、且つ針部の外径
よりも小さく形成した。In order to achieve the above object, in the pierce according to the present invention, the needle portion is made of ceramic, and the catch having the needle insertion hole into which the needle portion is inserted is made of resin. In the pierce formed in step 1, the tip corner portion of the needle portion is formed into a curved surface having a radius of curvature of 0.05 mm to 0.3 mm, and the tip central portion of the needle portion is formed into a flat shape, and The inner diameter of the needle insertion hole is formed to be larger than the flat portion at the center of the tip of the needle portion and smaller than the outer diameter of the needle portion.
【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 an embodiment of the pierce according to the present invention, in which 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 ) added with 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, carbonization. Silicon (Si
C) or silicon nitride (Si 3 N 4 ) or the like. Ceramic members are chemically very stable,
There is no harm to the 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 made of a resin having elasticity such as silicon resin, and has a needle insertion hole 2a for inserting the needle portion 1 in the center thereof.
【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, and the tip corner portion 1b has a diameter of 0.
It is formed in a curved surface having a radius of curvature R of 05 mm to 0.3 mm, and the central end 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 portion 1b is set to 0.05 mm to 0.3 mm.
To form a curved surface having a radius of curvature R of mm, the ceramic raw material is extruded into a rod shape, sintered, and then barrel-polished. That is, it is formed by introducing a rod-shaped body obtained by sintering a ceramic raw material and green carborundum into water and performing centrifugal barrel polishing. For example, when the rod-shaped body is made of zirconia ceramic, the tip corner 1b has a radius of curvature R of 0.05 mm after barrel polishing for 2 hours, and the tip corner 1b has a radius of curvature of 0.10 mm after barrel polishing for 5 hours. R is 0.21 mm for 10 hours, 0.26 mm for 16 hours, 0.28 mm for 20 hours, and 0.30 mm for 28 hours. It has a radius of curvature R. Note that the radius of curvature R is 0.30 mm even after 30 hours.
Does not change. That is, the tip corner portion 1b of the needle portion 1 is set to 0.
A curved surface having a radius of curvature R of 26 mm can be formed in a relatively short time, but it takes a long time to form a curved surface having a radius of curvature R exceeding 0.26 mm, and even if barrel polishing is performed for 30 hours or more, a rod shape is formed. The radius of curvature R of the tip corner portion 1b does not change only by decreasing the body diameter D 1 . Therefore, the needle portion 1
When forming the zirconia ceramic, the tip corner 1b
Even if it is formed into a curved surface, its radius of curvature R is 0.3 m
m or less, and from the viewpoint of further shortening the manufacturing process, it is 0.
26 mm or less is desirable.
【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 made of silicon, the inner diameter D 2 of the needle insertion hole 2a of the catch 2 can be held if it is smaller than the outer diameter D 1 of the needle portion 1, but outside the needle portion 1. When the diameter is smaller than the diameter D 1 by 0.1 mm or more, 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 In order to be able to
The flat portion 1c at the center of the tip of the needle portion 1 must be at least smaller than the inner diameter D 2 of the catch 2. Therefore, the tip corner portion 1b of the needle portion 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、針部の先端角部を０．０５ｍｍ〜０．３ｍｍの曲
率半径を有する曲面状に形成することから、針部をセラ
ミック部材で形成し、キャッチを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 pierce of the present invention, since the tip corner portion of the needle portion is formed into a curved surface having a radius of curvature of 0.05 mm to 0.3 mm, the needle portion is made of ceramic. Even if the catch is made of resin and the catch is made of resin, the needle portion can be smoothly and firmly attached to the catch.
Further, since the central portion of the tip of the needle portion is flat, the pierce becomes 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 1 ... Needle part, 2 ... Catch, 2a ... Needle insertion hole
Claims (4)
の針部が挿着される針挿着孔を有するキャッチを樹脂で
形成したピアスにおいて、前記針部の先端角部を０．０
５ｍｍ〜０．３ｍｍ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、且つ針部の外径よりも小さく形
成したことを特徴とするピアス。1. A pierce in which a needle portion is made of ceramic and a catch having a needle insertion hole into which the needle portion is inserted is made of resin, and a tip corner portion of the needle portion is 0.0.
The needle portion is formed into a curved surface having a radius of curvature of 5 mm to 0.3 mm, and the tip center portion of the needle portion is formed flat so that the inner diameter of the needle insertion hole of the catch is flat at the tip center portion of the needle portion. A pierce characterized by being formed to be larger than the needle-shaped portion and smaller than the outer diameter of the needle portion.
ことを特徴とする請求項１に記載のピアス。2. The piercing according to claim 1, wherein the catch is made of silicone resin.
０．２６ｍｍの曲率半径を有する曲面状に形成したこと
を特徴とする請求項１に記載のピアス。3. The tip corner portion of the needle portion is 0.05 mm to
The pierce according to claim 1, wherein the pierce is formed into a curved surface having a radius of curvature of 0.26 mm.
部の外径よりも０．１ｍｍ以上小さく形成したことを特
徴とする請求項１又は請求項３に記載のピアス。4. The pierce according to claim 1, wherein an inner diameter of the needle insertion hole of the catch is smaller than an outer diameter of the needle portion by 0.1 mm or more.
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 true JPH09108013A (en) | 1997-04-28 |
| JP3266480B2 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) |
Cited By (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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3266480B2 (en) | 2002-03-18 |
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