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JP6000517B2 - Trinkets for jewelry - Google Patents
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JP6000517B2 - Trinkets for jewelry - Google Patents

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JP6000517B2
JP6000517B2 JP2011147804A JP2011147804A JP6000517B2 JP 6000517 B2 JP6000517 B2 JP 6000517B2 JP 2011147804 A JP2011147804 A JP 2011147804A JP 2011147804 A JP2011147804 A JP 2011147804A JP 6000517 B2 JP6000517 B2 JP 6000517B2
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metal fitting
male
knob
female
fastener
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JP2013013525A (en
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茂 有竹
茂 有竹
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株式会社ミキモト装身具
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Description

この発明は、真珠や珊瑚、宝石などの宝玉にワイヤを挿通して多数個連接してなる数珠状の装身具、あるいは金、銀、プラチナ等の貴金属製の鎖状の装身具、例えばネックレスやブレスレットなどにおいて、その両端を連結して無端状にするための装身具用留め具に関する。   This invention is a rosary accessory that is formed by connecting a number of jewels such as pearls, agates, and jewels and connecting them, or a chain accessory made of gold, silver, platinum or the like, such as a necklace or a bracelet. The present invention relates to a fastener for jewelry that connects both ends thereof to make it endless.

一般に、ネックレスやブレスレット等の数珠状あるいは鎖状の装身具は、無端状にして首や腕に装着されるが、着脱の度にその両端を連結したり離間させたりしなければならない。そのため、その着脱を容易かつ確実に行えて、且つ不用意に離脱することがないようにするために、種々の留め具あるいは連結具が使用されている。
その多くは、挿入孔を有する雌型金具とその挿入孔に挿脱可能な挿入部を有する雄型金具との組み合わせからなるピン挿脱タイプのものであった。
In general, a rosary or chain-like accessory such as a necklace or a bracelet is attached to the neck or arm in an endless shape, but the ends must be connected or separated each time it is attached or detached. For this reason, various fasteners or connecting tools are used so that the attachment and detachment can be easily and reliably performed and the careless removal is prevented.
Many of them were of the pin insertion / removal type comprising a combination of a female metal fitting having an insertion hole and a male metal fitting having an insertion part that can be inserted into and removed from the insertion hole.

例えば、特許文献1には、ピン挿脱タイプの装身具用留め具において、雌型金具に相当する装飾部材の差込孔に雄型金具に相当する差込部材を差し込むと、その差込部材に形成されている溝(被係合溝)に装飾部材の内部に設けられた凸状の係合部が係合して、両者を連結して抜け止めする構成が開示されている。   For example, in Patent Literature 1, in a fastener for a pin insertion / removal type accessory, when an insertion member corresponding to a male fitting is inserted into an insertion hole of a decorative member corresponding to a female fitting, the insertion member is inserted into the insertion member. The structure which the convex-shaped engaging part provided in the inside of a decoration member engages with the formed groove | channel (engaged groove | channel), connects both, and the structure which prevents omission is disclosed.

特開2005−237773号公報JP 2005-237773 A

しかしながら、このような装身具用留め具では、雌型金具に相当する装飾部材の内部に抜け止め用の係合部を設けるために、係合部とそれによる差込部材との係合状態を解除するための操作部とを有する可動部材と、その可動部材を付勢するスプリング及び可動部材のガイド筒などを、差込部材の挿入方向と直交する方向に挿入して組み付ける必要があった。   However, in such a fastener for jewelry, in order to provide an engagement portion for retaining the inside of the decorative member corresponding to the female metal fitting, the engagement state between the engagement portion and the insertion member thereby is released. It is necessary to insert and assemble a movable member having an operation section for performing the operation, a spring for urging the movable member, a guide cylinder of the movable member, and the like in a direction orthogonal to the insertion direction of the insertion member.

そのため、雌型金具の部品点数が多く、構造が複雑で加工及び組み付け工数も多くなり、製造コストが高くなるという問題があった。また、雌型金具である装飾部材内に複数の部品を収納して組み付けるため、装飾部材の形状が限定されるという問題もあった。   Therefore, there are problems that the number of parts of the female metal fitting is large, the structure is complicated, the number of processing and assembling steps is increased, and the manufacturing cost is increased. In addition, since a plurality of parts are housed and assembled in a decorative member that is a female metal fitting, there is a problem that the shape of the decorative member is limited.

この発明は、このような問題を解決するためになされたものであり、ネックレスやブレスレット等の装身具用の留め具として、雌型金具と雄型金具の着脱が容易で且つ不用意に離脱する恐れがなく、しかも構造が簡単で鋳造(キャスティング)によって安価に製造でき、形状の自由度が高い装身具用留め具を提供することを目的とする。   The present invention has been made to solve such a problem, and as a fastener for a jewelry such as a necklace or a bracelet, the female metal fitting and the male metal fitting can be easily detached and inadvertently detached. It is another object of the present invention to provide a fastener for jewelry that has a simple structure, can be manufactured at low cost by casting, and has a high degree of freedom in shape.

上記の目的を達成するため、この発明による装身具用留め具は、先端部に向かって先細り形状になった挿入部を有する雄型金具と、その雄型金具の上記挿入部が挿脱可能な挿入孔を有する雌型金具とからなる。
そして、上記雄型金具は、上記挿入部の後端につまみ部を有し、上記挿入部の上記先端部が一体であって、他の部分が上記つまみ部から先端部に向かう方向に沿う楔状の間隙を介して対向し、上記先端部を支点として互いに接近及び離間可能なバネ性を有する第1の部分と第2の部分とからなり、その第2の部分の上記挿入部の後端部付近の外周側に上記雌型金具の挿入孔の周縁部と係合する係合段部が設けられている。
また、上記雄型金具には、上記挿入部の上記第1の部分と第2の部分の互いに対向する面の一方の面に、他方の面に向かって膨出する膨出部を、上記挿入部の長手方向の中央よりも上記先端部寄りの位置に設けられている。
さらに、上記雌型金具は、少なくとも上記挿入孔とその周縁部の内側に空洞を有すると共に、上記挿入孔とその空洞を介して対向する内部に、上記雄型金具の上記挿入部の挿入をガイドしてその挿入位置を保持するガイド部を有する
In order to achieve the above object, a fastener for jewelry according to the present invention includes a male metal fitting having an insertion portion tapered toward a distal end portion, and an insertion in which the insertion portion of the male metal fitting can be inserted and removed. It consists of a female metal fitting having a hole.
Then, the male fitting has a knob portion at the rear end of the insertion portion, a the distal end of the insertion portion is integral, along the direction in which other portions toward the tip portion from the knob portion wedge A first portion and a second portion having a spring property that can approach and separate from each other with the tip portion serving as a fulcrum, and the rear end portion of the insertion portion of the second portion An engaging step portion that engages with the peripheral edge portion of the insertion hole of the female metal fitting is provided on the outer peripheral side in the vicinity.
Further, the male metal fitting includes a bulging portion that bulges toward the other surface on one surface of the first portion and the second portion of the insertion portion facing each other. It is provided at a position closer to the tip than the center in the longitudinal direction of the part.
Further, the female metal fitting has a cavity at least inside the insertion hole and its peripheral edge, and guides the insertion of the insertion part of the male metal fitting into the inside facing the insertion hole and the cavity. and to have a guide portion for holding the inserted position.

また、上記雌型金具の上記ガイド部が、上記挿入孔に対向する開口を有する内周凹面によるガイド面を形成し、そのガイド面が上記開口に向かって拡開しているとよい。 Further, the guide part of the female metal fitting may form a guide surface by an inner peripheral concave surface having an opening facing the insertion hole, and the guide surface may be expanded toward the opening .

また、上記雄型金具の上記第1の部分と第2の部分のうち少なくとも上記第2の部分に、上記挿入部の長手方向に沿う細長い開口を1本又は複数本形成するとよい。
上記雄型金具のつまみ部が、上記挿入部の第1の部分と一体のつまみ半部と第2の部分と一体のつまみ半部とからなり、その各つまみ半部の後端面が楕円を長径に沿って2分割した半楕円形状であり、その分割面が上記間隙を介して対向するようにするとよい。
上記雄型金具の挿入部の第1の部分と第2の部分のそれぞれ挿入方向に直交する方向の断面形状が半円形であり、上記雌型金具の挿入孔の内周が円形であるのが望ましい。
One or more elongated openings along the longitudinal direction of the insertion portion may be formed in at least the second part of the first part and the second part of the male metal fitting.
The knob part of the male metal fitting comprises a knob half part integral with the first part of the insertion part and a knob half part integral with the second part, and the rear end surface of each knob half part has an ellipse with a long diameter. A semi-elliptical shape that is divided into two along the line, and the divided surfaces are preferably opposed to each other through the gap.
The cross-sectional shape of each of the first part and the second part of the insertion part of the male metal fitting in a direction orthogonal to the insertion direction is a semicircle, and the inner periphery of the insertion hole of the female metal fitting is a circle. desirable.

このように構成したこの発明による装身具用留め具は、雌型金具と雄型金具の着脱が容易で且つ不用意に離脱する恐れがなく、しかも構造が簡単で鋳造によって安価に製造でき、形状の自由度が高いので、特に雌型金具を任意の形状に形成することができる。   The fastener for jewelry according to the present invention configured as described above is easy to attach and detach the female metal fitting and the male metal fitting, and there is no fear of unintentional detachment, and the structure is simple and can be manufactured at low cost by casting. Since the degree of freedom is high, the female metal fitting can be formed in any shape.

この発明による装身具用留め具の第1実施例の雄型金具と雌型金具の連結状態を、雌型金具だけを連結方向に沿う断面にして連結方向に直交する方向から見た側面図である。It is the side view which looked at the connection state of the male metal fitting and female fitting of 1st Example of the fastener for jewelry by this invention from the direction orthogonal to a connection direction by making only a female metal fitting the cross section along a connection direction. . 図1における雄型金具のみを自由状態で示す側面図である。It is a side view which shows only the male metal fitting in FIG. 1 in a free state. 同じくその雄型金具の第1の部分と第2の部分が接近した状態を示す側面図である。It is a side view which shows the state which the 1st part and 2nd part of the male metal fitting approached similarly. 図3のY−Y線に沿う断面図である。It is sectional drawing which follows the YY line of FIG. 同じくその雄型金具の平面図である。It is a top view of the male metal fitting similarly.

図1における雌型金具の外観を示す斜視図である。It is a perspective view which shows the external appearance of the female metal fitting in FIG. 同じくその雌型金具の平面図である。It is a top view of the female metal fitting similarly. 図7のX−X線に沿う断面図である。It is sectional drawing which follows the XX line of FIG. 図8に示した雌型金具に雄型金具を挿入して連結する際の状態を段階的に示す工程図である。It is process drawing which shows the state at the time of inserting and connecting a male metal fitting to the female metal fitting shown in FIG. この発明による装身具用留め具の第2実施例における雄型金具の自由状態を示す側面図である。It is a side view which shows the free state of the male metal fitting in 2nd Example of the fastener for jewelry by this invention. 同じくその雄型金具の第1の部分と第2の部分が接近した状態を示す図3と同様な側面図である。FIG. 4 is a side view similar to FIG. 3 showing a state in which the first part and the second part of the male metal fitting are also close to each other. この発明による装身具用留め具の第2実施例による雌型金具と雄型金具の連結状態を示す図1と同様な側面図である。FIG. 6 is a side view similar to FIG. 1 showing a connection state of a female metal fitting and a male metal fitting according to a second embodiment of the fastener for jewelry according to the present invention.

第1、第2実施例に共通に適用できる雄型金具の好ましい変形例を示す平面図である。It is a top view which shows the preferable modification of the male metal fitting which can be applied in common to 1st, 2nd Example. この発明による装身具用留め具における雄型金具のより好ましい実施例を示す側面図である。It is a side view which shows the more preferable Example of the male metal fitting in the fastener for jewelry by this invention. 同じくその雄型金具の平面図である。It is a top view of the male metal fitting similarly. 同じくその雄型金具を図14における右方から見た図である。It is the figure which similarly saw the male metal fitting from the right side in FIG. 図14から図16に示した雄型金具の弾性力を説明するための図である。It is a figure for demonstrating the elastic force of the male metal fitting shown in FIGS. つまみ部の端面形状が円形である場合のつまみ操作の説明図である。It is explanatory drawing of knob operation in case the end surface shape of a knob part is circular. つまみ部の端面形状が楕円形である場合のつまみ操作の説明図である。It is explanatory drawing of knob operation in case the end surface shape of a knob part is an ellipse.

つまみ部の外周面の軸方向形状が単一の凸曲面である場合の雄型金具の引き抜き操作の説明図である。It is explanatory drawing of extraction operation | movement of the male metal fitting in case the axial direction shape of the outer peripheral surface of a knob part is a single convex curved surface. 第1、第2実施例のつまみ部を有する雄型金具の引き抜き操作の説明図である。It is explanatory drawing of extraction operation | movement of the male metal fitting which has a knob part of 1st, 2nd Example. 図14から図16に示した雄型金具の引き抜き操作の説明図である。It is explanatory drawing of extraction operation | movement of the male metal fitting shown in FIGS. この発明による装身具用留め具における雌型金具の他の例を示す図8と同様な断面図である。It is sectional drawing similar to FIG. 8 which shows the other example of the female metal fitting in the fastener for jewelry of this invention. この発明による装身具用留め具における雌型金具のさらに他の例を示す図8と同様な断面図である。It is sectional drawing similar to FIG. 8 which shows the further another example of the female metal fitting in the fastener for jewelry of this invention. この発明による装身具用留め具によって真珠のネックレスの両端を連結させた状態の一例を示す斜視図である。It is a perspective view which shows an example of the state which connected the both ends of the pearl necklace with the fastener for jewelry of this invention.

以下、この発明の好ましい実施形態を図面を参照しながら説明する。
〔第1実施例〕
まず、この発明による装身具用留め具の第1実施例を図1〜図9によって説明する。
図1は、この発明による装身具用留め具の第1実施例の雄型金具と雌型金具の連結状態を、雌型金具だけを連結方向に沿う断面にして連結方向に直交する方向から見た側面図である。図2〜図5はその雄型金具を説明するための図であり、図6〜図8は雌型金具を説明するための図である。そして、図9は、雌型金具に雄型金具を挿入して連結する際の状態を段階的に示す工程図である。
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
[First embodiment]
First, a first embodiment of a fastener for jewelry according to the present invention will be described with reference to FIGS.
FIG. 1 shows a connection state of a male metal fitting and a female metal fitting of the first embodiment of the fastener for jewelry according to the present invention as seen from a direction orthogonal to the connection direction with only the female metal fitting being a cross section along the connection direction. It is a side view. 2-5 is a figure for demonstrating the male metal fitting, and FIGS. 6-8 is a figure for demonstrating a female metal fitting. FIG. 9 is a process diagram showing stepwise the state when the male metal fitting is inserted and connected to the female metal fitting.

この第1実施例の装身具用留め具は図1に示すように、先端部11aに向かって先細り形状になった挿入部11を有する雄型金具10と、その雄型金具10の挿入部11が挿脱可能な挿入孔21を有する雌型金具20とからなる。
その雄型金具10は、図2〜図5にも明示するように、挿入部11の後端につまみ部12を有し、挿入部11の先端部11aが一体であって、他の部分がつまみ部12から先端部11aに向かう方向に沿う楔状の間隙14を介して対向し、先端部11aを支点として互いに接近及び離間可能なバネ性を有する第1の部分11bと第2の部分11cとからなる。
As shown in FIG. 1, the fastener for jewelry according to the first embodiment includes a male metal fitting 10 having an insertion portion 11 that is tapered toward a distal end portion 11 a, and an insertion portion 11 of the male metal fitting 10. It consists of a female metal fitting 20 having an insertion hole 21 that can be inserted and removed.
As shown in FIGS. 2 to 5, the male metal fitting 10 has a knob portion 12 at the rear end of the insertion portion 11, the tip portion 11 a of the insertion portion 11 is integral, and the other portions are A first portion 11b and a second portion 11c which are opposed to each other via a wedge-shaped gap 14 extending in a direction from the knob portion 12 toward the tip portion 11a and have spring properties that can approach and separate from each other with the tip portion 11a as a fulcrum. Consists of.

そのため、つまみ部12は、第1の部分11bの後端部に一体のつまみ半部12aと第2の部分11cの後端部に一体のつまみ半部12bとに分割されている。そして、つまみ半部12aの後端部のつまみ半部12bに近い側にリング状の係着部13を一体に設けており、つまみ半部12bには係着部13の一部が入り込める逃げ溝12c(図2及び図3に破線で示す)を形成している。係着部13には、多数の宝玉を連接するためのワイヤや紐あるいは鎖等を係着する。
また、第2の部分11cの挿入部11の後端部付近の外周側に、図1に示すように雌型金具20の挿入孔21の周縁部と係合する係合段部11dが設けられている。
Therefore, the knob portion 12 is divided into a knob half portion 12a integrated with the rear end portion of the first portion 11b and a knob half portion 12b integrated with the rear end portion of the second portion 11c. A ring-shaped engaging portion 13 is integrally provided on the rear end portion of the knob half 12a close to the knob half 12b, and a clearance groove into which a part of the engaging portion 13 can enter the knob half 12b. 12c (shown by broken lines in FIGS. 2 and 3). A wire, string, chain, or the like for connecting a large number of jewels is attached to the engaging portion 13.
Further, an engagement step portion 11d that engages with the peripheral edge portion of the insertion hole 21 of the female metal fitting 20 is provided on the outer peripheral side of the second portion 11c near the rear end portion of the insertion portion 11 as shown in FIG. ing.

一方、雌型金具20は図1及び図8に示すように、少なくとも挿入孔21とその周縁部の内側に空洞22を有する中空球形の本体20a内に、挿入孔21とその空洞22を介して対向するように、雄型金具10の挿入部11の挿入をガイドしてその挿入位置を保持する円筒状のガイド部23を設けている。   On the other hand, as shown in FIGS. 1 and 8, the female metal fitting 20 is inserted into the hollow spherical main body 20 a having at least the insertion hole 21 and the inner periphery of the peripheral portion thereof through the insertion hole 21 and the cavity 22. A cylindrical guide portion 23 that guides the insertion of the insertion portion 11 of the male metal fitting 10 and holds the insertion position is provided so as to face each other.

この実施例における雌型金具20は、図6及び図7にも示すように金属によって中空球形の本体20aと円筒状のガイド部23とが一体に形成され、その本体20aの一部に内周が円形の挿入孔21が設けられている。その挿入孔21の内径は、図1に示すように雄型金具10を挿入孔21に完全に挿入したときに、第1の部分11bの後端部外周面S1と第2の部分11cの係合段部11dの低段面S2との距離D(図4に示す)に等しくなるように形成している。   As shown in FIGS. 6 and 7, the female metal fitting 20 in this embodiment has a hollow sphere-shaped main body 20a and a cylindrical guide portion 23 integrally formed of metal, and a part of the main body 20a has an inner circumference. A circular insertion hole 21 is provided. The inner diameter of the insertion hole 21 is such that when the male fitting 10 is completely inserted into the insertion hole 21 as shown in FIG. 1, the rear end portion outer peripheral surface S1 of the first portion 11b and the second portion 11c are engaged. It is formed so as to be equal to a distance D (shown in FIG. 4) between the stepped portion 11d and the lower step surface S2.

雌型金具20の内部の挿入孔21と同軸線上で対向する位置に、図1及び図8に示すように円筒状のガイド部23を設けている。そして、そのガイド部23に、挿入孔21に対向する開口23aを有する内周凹面(この例では円錐面)によるガイド面23bを形成しており、そのガイド面23bが開口23aに向かってラッパ状に拡開している。
さらに、この雌型金具20の挿入孔21と反対側の外部に、リング状の係着部24を設けている。この係着部24には、雄型金具10の係着部13と同様に、多数の宝玉を連接するためのワイヤや紐あるいは鎖等を係着する。
As shown in FIGS. 1 and 8, a cylindrical guide portion 23 is provided at a position facing the insertion hole 21 inside the female metal fitting 20 on the same axis. The guide portion 23 is formed with a guide surface 23b having an inner peripheral concave surface (in this example, a conical surface) having an opening 23a facing the insertion hole 21, and the guide surface 23b has a trumpet shape toward the opening 23a. Has expanded.
Further, a ring-shaped engaging portion 24 is provided on the outside of the female metal fitting 20 opposite to the insertion hole 21. Similar to the engaging portion 13 of the male metal fitting 10, wires, strings, chains, or the like for connecting a large number of jewels are attached to the engaging portion 24.

ところで、雄型金具10の挿入部11はバネ性を有しているので、自由状態では図2に示すように第1の部分11bと第2の部分11cとが互いに離間して楔状の間隙14が広くなっている(これを開いた状態とも称す)。   By the way, since the insertion part 11 of the male metal fitting 10 has a spring property, in a free state, as shown in FIG. 2, the first part 11b and the second part 11c are separated from each other and the wedge-shaped gap 14 is formed. Is wide (also called open state).

この雄型金具10の挿入部11を雌型金具20の挿入孔21に挿入する過程で、第1の部分11bと第2の部分11cの外周面が挿入孔21の内周面に押圧されたとき、あるいはこの雄型金具10を雌型金具20から引き抜くために、つまみ半部12a、12bをつまんで互いに近づける方向に力を加えると、図3に示すように第1の部分11bと第2の部分11cとが先端部11aを支点として互いに接近するように撓んで、楔状の間隙14が狭くなる(この状態を閉じた状態とも称す)。   In the process of inserting the insertion portion 11 of the male metal fitting 10 into the insertion hole 21 of the female metal fitting 20, the outer peripheral surfaces of the first portion 11 b and the second portion 11 c are pressed against the inner peripheral surface of the insertion hole 21. When, or in order to pull out the male metal fitting 10 from the female metal fitting 20, when the force is applied in the direction in which the knob halves 12a and 12b are held close to each other, as shown in FIG. The portion 11c is bent so as to approach each other with the tip portion 11a as a fulcrum, and the wedge-shaped gap 14 is narrowed (this state is also referred to as a closed state).

この雄型金具10の挿入部11は、第1の部分11bと第2の部分11cのそれぞれ挿入方向に直交する方向の断面形状(図4に示す外周形状)が半円形である。そのため、挿入部11全体として略円形断面の先細り形状となるので、雌型金具20の円形の挿入孔21に、周方向の角度を選ばずに挿入できる。   The insertion portion 11 of the male metal fitting 10 has a semicircular cross-sectional shape (peripheral shape shown in FIG. 4) in a direction perpendicular to the insertion direction of each of the first portion 11b and the second portion 11c. Therefore, since the insertion portion 11 as a whole has a tapered shape with a substantially circular cross section, the insertion portion 11 can be inserted into the circular insertion hole 21 of the female metal fitting 20 without selecting an angle in the circumferential direction.

この雄型金具10の挿入部11の第1の部分11bには、雌型金具20の挿入孔21の周縁部と係合する係合段部は設けない。しかし、この実施例では第1の部分11bの後端部に、図4に明示するように第2の部分11cに近い外周部の両側を、第2の部分11cに近付いたり離れたりする方向に平行に面取りしたように切り欠いた切欠部11eを設けている。   In the first portion 11 b of the insertion portion 11 of the male metal fitting 10, an engagement step portion that engages with the peripheral edge portion of the insertion hole 21 of the female metal fitting 20 is not provided. However, in this embodiment, at the rear end of the first portion 11b, as shown in FIG. 4, both sides of the outer peripheral portion close to the second portion 11c are in a direction approaching or leaving the second portion 11c. A cutout portion 11e cut out so as to be chamfered in parallel is provided.

これによって、図1に示したように雌型金具20に雄型金具10を挿入して連結させた状態において、挿入部11の第1の部分11bの切欠部11eが第2の部分11cの係合段部11dとの間でスロープを形成するので、雄型金具10を雌型金具20の挿入孔21内でスムーズに回転させることが可能になる。   Accordingly, as shown in FIG. 1, in the state where the male metal fitting 10 is inserted and connected to the female metal fitting 20, the cutout portion 11e of the first portion 11b of the insertion portion 11 is engaged with the second portion 11c. Since a slope is formed between the stepped portion 11d, the male metal fitting 10 can be smoothly rotated in the insertion hole 21 of the female metal fitting 20.

この第1の部分11bの切欠部11eは第2の部分11cの係合段部11dと、図2の側面図で長手方向の長さが略一致しており、かつ図4の断面図に示すように、幅方向における係合段部11dの両側にできる段差と、切欠部11eによって第1の部分11bの両側にできた段差とが略一致している。   The cutout portion 11e of the first portion 11b substantially coincides with the engagement step portion 11d of the second portion 11c in the longitudinal direction in the side view of FIG. 2, and is shown in the sectional view of FIG. As described above, the step formed on both sides of the engaging step portion 11d in the width direction and the step formed on both sides of the first portion 11b by the cutout portion 11e substantially coincide with each other.

また、雄型金具10のつまみ部12は、つまみ易いように挿入部11の後端部の径よりも十分大きい径を有し、外周面を2段の凸面に形成した円板を2分割した形状にしているが、これに限るものではなく、楕円形状や多面体等の指でつまみ易く見栄えのよい任意の形状や大きさにしてもよい。   Further, the knob portion 12 of the male metal fitting 10 has a diameter that is sufficiently larger than the diameter of the rear end portion of the insertion portion 11 so that it can be easily pinched, and a disc having an outer peripheral surface formed into two convex surfaces is divided into two. The shape is not limited to this, but may be any shape or size that is easy to pinch with a finger such as an elliptical shape or a polyhedron and looks good.

次に、この第1実施例の装身具用留め具による雄型金具10と雌型金具20を連結及び離脱する際の動作を、図9によって説明する。図9は、図8に示した雌型金具20に雄型金具10を挿入して連結する際の状態を段階的に示す工程図である。   Next, the operation when the male metal fitting 10 and the female metal fitting 20 are connected to and detached from the accessory fastener according to the first embodiment will be described with reference to FIG. FIG. 9 is a process diagram showing in a stepwise manner the state when the male metal fitting 10 is inserted and connected to the female metal fitting 20 shown in FIG.

まず、一方の手の指で雌型金具20を保持し、他方の手の指で雄型金具10のつまみ部12をつまんで、挿入部11の先端部11aで雌型金具20の挿入孔21を探り当て、図9の(a)に示すように、雄型金具10の挿入部11を雌型金具20の挿入孔21に挿入する。挿入部11は先端部11aに向かって細くなっているので、挿入孔21に容易に挿入できる。   First, the female metal fitting 20 is held by the finger of one hand, the knob portion 12 of the male metal fitting 10 is pinched by the finger of the other hand, and the insertion hole 21 of the female metal fitting 20 is formed at the distal end portion 11a of the insertion portion 11. Then, as shown in FIG. 9A, the insertion part 11 of the male metal fitting 10 is inserted into the insertion hole 21 of the female metal fitting 20. Since the insertion portion 11 is narrowed toward the distal end portion 11a, it can be easily inserted into the insertion hole 21.

その際、挿入部11の挿入方向が挿入孔21の中心軸線に対して多少傾いていても、その先端部11aが雌型金具20のガイド部23に当接すると、図9の(b)に示すように、挿入部11はそのガイド面23bに先端部11aがガイドされて傾きが矯正されながら挿入される。その挿入途中から、挿入部11の第1の部分11bと第2の部分11cは、外周面が雌型金具20の挿入孔21の内周面によって押圧され、閉じた状態になってくる。そして、挿入部11を係合段部11dの直前まで雌型金具20内に押し込んだときに、第1の部分11bと第2の部分11cが最も閉じた状態になる。   At that time, even if the insertion direction of the insertion portion 11 is slightly inclined with respect to the central axis of the insertion hole 21, if the distal end portion 11 a abuts against the guide portion 23 of the female metal fitting 20, FIG. As shown, the insertion portion 11 is inserted while the tip portion 11a is guided by the guide surface 23b and the inclination is corrected. In the middle of the insertion, the outer peripheral surface of the first portion 11b and the second portion 11c of the insertion portion 11 is pressed by the inner peripheral surface of the insertion hole 21 of the female metal fitting 20 and is in a closed state. And when the insertion part 11 is pushed in in the female metal fitting 20 just before the engagement step part 11d, the 1st part 11b and the 2nd part 11c will be in the most closed state.

その後、さらにつまみ部12が雌型金具20の外面に当接するまで挿入部11を押し込むと、図9の(c)に示すように、雌型金具20の挿入孔21の周縁部の一部が挿入部11の第2の部分11cの係合段部11dに嵌り込み、第1の部分11bと第2の部分11cはそのバネ性による復元力で開き、挿入孔21内に収まる範囲で開いた状態に戻る。
この状態で、雌型金具20の挿入部11の先端部付近の外周面と、雌型金具20のガイド部23のガイド面23bとの間に殆ど隙間がないようにするのが望ましい。
Thereafter, when the insertion portion 11 is further pushed in until the knob portion 12 comes into contact with the outer surface of the female metal fitting 20, a part of the peripheral edge portion of the insertion hole 21 of the female metal fitting 20 is obtained as shown in FIG. The first portion 11b and the second portion 11c are opened by a restoring force due to their spring property, and are opened within a range that can be accommodated in the insertion hole 21, by being fitted into the engaging step portion 11d of the second portion 11c of the insertion portion 11. Return to state.
In this state, it is desirable that there is almost no gap between the outer peripheral surface near the distal end of the insertion portion 11 of the female metal fitting 20 and the guide surface 23b of the guide portion 23 of the female metal fitting 20.

この状態(図1と同じ状態)では、雄型金具10の挿入部11はその先端部11aに近い部分が雌型金具20のガイド部23内に嵌入して保持される。そして、挿入部11のつまみ部12側の端部は挿入孔21の内周面に押圧しているので、その位置がしっかりと固定され、係合段部11dが雌型金具20の挿入孔21の周縁部と係合して抜け止めされる。したがって、雄型金具10と雌型金具20が確実に連結されてロックされ、両者の間に雄型金具10を引き抜く方向の力が加わったとしても、雄型金具10が雌型金具20から抜けることはない。   In this state (the same state as in FIG. 1), the insertion portion 11 of the male metal fitting 10 is fitted and held in the guide portion 23 of the female metal fitting 20 at a portion close to the distal end portion 11 a. And since the edge part by the side of the knob part 12 of the insertion part 11 is pressing on the internal peripheral surface of the insertion hole 21, the position is firmly fixed and the engaging step part 11d is the insertion hole 21 of the female metal fitting 20. It is prevented from coming off by engaging with the peripheral edge of the. Therefore, even if the male metal fitting 10 and the female metal fitting 20 are securely connected and locked, and a force in the direction of pulling out the male metal fitting 10 is applied between them, the male metal fitting 10 comes out of the female metal fitting 20. There is nothing.

この雄型金具10と雌型金具20の連結を解除する場合には、図9の(c)の状態で、一方の手の指で雌型金具20を保持し、他方の手の指で雄型金具10のつまみ部12のつまみ半部12a,12bをつまんで互いに接近させるように力を加えながら、引っ張ればよい。それによって、先ず雄型金具10の挿入部11の第1の部分11bと第2の部分11cとが閉じるように撓んで、第2の部分11cの係合段部11dと雌型金具20の挿入孔21の周縁部との係合が外れる。その後、図9の(b),(a)に示すような状態を経て、雄型金具10が雌型金具20から完全に離脱する。   When releasing the connection between the male metal fitting 10 and the female metal fitting 20, the female metal fitting 20 is held by the finger of one hand and the male finger is held by the finger of the other hand in the state of FIG. What is necessary is just to pull, applying force so that the knob half parts 12a and 12b of the knob part 12 of the metal mold 10 may be pinched and brought close to each other. As a result, first, the first portion 11b and the second portion 11c of the insertion portion 11 of the male metal fitting 10 are bent so as to close, and the engagement step portion 11d of the second portion 11c and the female metal fitting 20 are inserted. The engagement with the peripheral edge of the hole 21 is released. Thereafter, the male metal fitting 10 is completely detached from the female metal fitting 20 through the states shown in FIGS. 9B and 9A.

なお、雄型金具10のつまみ部12をつまんで引き抜き易いように、雌型金具20に対して雄型金具10を前述したように相対回転させることができる。
また、雄型金具10の挿入部11における第1の部分11bの後端部外周側にも、第2の部分11cの係合段部11dと同様な係合段部を形成すれば、連結状態における雌型金具20に対する雄型金具10の抜け止めは一層確実になる。
It should be noted that the male fitting 10 can be rotated relative to the female fitting 20 as described above so that the knob portion 12 of the male fitting 10 can be easily grasped and pulled out.
Further, if an engagement step similar to the engagement step 11d of the second portion 11c is formed on the outer peripheral side of the rear end of the first portion 11b in the insertion portion 11 of the male metal fitting 10, the connected state The male metal fitting 10 is more reliably prevented from coming off from the female metal fitting 20 in FIG .

しかし、そのようにすると、雄型金具10と雌型金具20の連結を解除する際に、雄型金具10のつまみ部12のつまみ半部12a,12bを押圧するようにつまんで引き抜こうとしても、第1の部分11bと第2の部分11cのいずれかの係合段部が、雌型金具20の挿入孔21の周縁部と係合したままになり易く、容易に引き抜くことができなくなる。   However, in such a case, when the connection between the male metal fitting 10 and the female metal fitting 20 is released, even if an attempt is made to pinch the knob half portions 12a and 12b of the knob portion 12 of the male metal fitting 10 so as to pull them out. The engaging step portion of either the first portion 11b or the second portion 11c is likely to remain engaged with the peripheral edge portion of the insertion hole 21 of the female metal fitting 20, and cannot be easily pulled out.

そのため、第1、第2の部分11b、11cの一方(この実施例では第2の部分11c)のみに係合段部11dを形成している。この場合、雌型金具20に対して挿入された雄型金具10が傾いたりぶれたりすると、係合段部11dと雌型金具20の挿入孔21の周縁部との係合が外れて、雄型金具10が抜けてしまう恐れがある。しかし、この実施例では、雄型金具10の挿入部11の先端部11a付近が、雌型金具20のガイド部23に嵌入して確実に保持されているので、雄型金具10が雌型金具20に連結した状態で、傾いたりぶれたりすることはない。したがって、雄型金具10が不用意に抜けるようなことは起こらない。   Therefore, the engagement step portion 11d is formed only in one of the first and second portions 11b and 11c (the second portion 11c in this embodiment). In this case, when the male metal fitting 10 inserted with respect to the female metal fitting 20 is tilted or shaken, the engagement between the engaging step portion 11d and the peripheral edge portion of the insertion hole 21 of the female metal fitting 20 is released. There is a risk that the mold 10 will come off. However, in this embodiment, since the vicinity of the distal end portion 11a of the insertion portion 11 of the male metal fitting 10 is fitted and securely held in the guide portion 23 of the female metal fitting 20, the male metal fitting 10 is the female metal fitting. In the state connected to 20, there is no tilting or shaking. Therefore, the male fitting 10 does not come off carelessly.

〔第2実施例〕
次に、この発明による装身具用留め具の第2実施例を、図10から図12によって説明する。図10及び図11はその第2実施例における雄型金具の開いた状態(自由状態)と閉じた状態を示す、第1実施例における図2及び図3と同様な側面図である。図12は、その第2実施例による雌型金具と雄型金具の連結状態を示す図1と同様な側面図である。
これらの各図において、図1〜図9と対応する部分には同一の符号を付しており、それらの説明は省略する。
[Second Embodiment]
Next, a second embodiment of the fastener for jewelry according to the present invention will be described with reference to FIGS. 10 and 11 are side views similar to FIGS. 2 and 3 in the first embodiment, showing the open state (free state) and the closed state of the male metal fitting in the second embodiment. FIG. 12 is a side view similar to FIG. 1 showing the connection between the female metal fitting and the male metal fitting according to the second embodiment.
In each of these drawings, the same reference numerals are given to the portions corresponding to those in FIGS. 1 to 9, and the description thereof is omitted.

この第2実施例において、前述した第1実施例と相違するのは、雄型金具10が、挿入部11の第2の部分11cの第1の部分11bと対向する面に、他方の面に向かって曲面状に膨らんだ膨出部11fを、挿入部11の長手方向の中央よりも先端部11a寄りの位置に設けている点だけである。雄型金具10が図10に示す開いた状態(自由状態)では、膨出部11fの頂面が第1の部分11bの対向面から僅かに離れている。
この第2実施例も雌型金具20は第1実施例の雌型金具20と同じである。
In the second embodiment, the difference from the first embodiment described above is that the male metal fitting 10 is on the surface facing the first portion 11b of the second portion 11c of the insertion portion 11 and on the other surface. The only difference is that the bulging portion 11f that bulges toward the curved surface is provided at a position closer to the distal end portion 11a than the center of the insertion portion 11 in the longitudinal direction. In the open state (free state) shown in FIG. 10, the top surface of the bulging portion 11f is slightly separated from the opposing surface of the first portion 11b.
Also in this second embodiment, the female metal fitting 20 is the same as the female metal fitting 20 of the first embodiment.

この膨出部11fを設けたことにより、雄型金具10を図10に示す開いた状態から、つまみ部12のつまみ半部12a,12bをつまんで、図11に示す閉じた状態にする際、はじめは第1の部分11bと第2の部分11cとが先端部11aを支点として撓んで接近するが、膨出部11fが第1の部分11bの対向面に当接した後は、その当接点に撓みの支点が移動する。そのため、第1の部分11bと第2の部分11cとを閉じるように撓ませるのに、より大きな力が必要になる。   By providing the bulging portion 11f, when the male metal fitting 10 is in the closed state shown in FIG. 11 by pinching the knob halves 12a and 12b of the knob portion 12 from the opened state shown in FIG. At first, the first portion 11b and the second portion 11c are bent and approached with the tip portion 11a as a fulcrum, but after the bulging portion 11f abuts against the opposing surface of the first portion 11b, the abutment point. The deflection fulcrum moves to. Therefore, a larger force is required to bend the first portion 11b and the second portion 11c so as to be closed.

そのため、バネ強度が高まって長期間使用しても復元力が弱まることがなくなり、図12に示すように雄型金具10と雌型金具20が連結した状態で、雄型金具10のつまみ部12に不用意な力が加わったとしても、挿入部11の第1の部分11bと第2の部分11cが閉じるように撓んで抜けるようなことを、一層確実に防ぐことができる。   Therefore, the spring strength is increased and the restoring force does not weaken even when used for a long time, and the knob portion 12 of the male fitting 10 is connected with the male fitting 10 and the female fitting 20 as shown in FIG. Even if an inadvertent force is applied, it is possible to more reliably prevent the first portion 11b and the second portion 11c of the insertion portion 11 from being bent so as to be closed.

膨出部11fは、挿入部11の第1の部分11bと第2の部分11cの互いに対向する面の一方の面に設ければよいので、第1の部分11bの第2の部分11cと対向する面に設けてもよい。この膨出部11fの位置や高さは適宜調整するとよい。
その他の構成および作用は、前述した第1実施例と同様であるから、説明を省略する。
Since the bulging portion 11f may be provided on one surface of the first portion 11b and the second portion 11c of the insertion portion 11 that face each other, the bulging portion 11f faces the second portion 11c of the first portion 11b. It may be provided on the surface. The position and height of the bulging portion 11f may be adjusted as appropriate.
Since other configurations and operations are the same as those of the first embodiment described above, description thereof will be omitted.

〔雄型金具の好ましい変形例〕
次に、上述した第1、第2実施例に共通に適用できる雄型金具の好ましい変形例について説明する。
図13は、雄型金具の変更例を示す図5と同様な平面図であり、図5と対応する部分には同一の符号を付してあり、それらの説明は省略する。なお、雌型金具は前述した各実施例の雌型金具20を共通に使用できる。
[Preferred modification of male metal fitting]
Next, a preferred modification of the male fitting that can be commonly applied to the first and second embodiments described above will be described.
FIG. 13 is a plan view similar to FIG. 5 showing a modified example of the male metal fitting, and the same reference numerals are given to the portions corresponding to FIG. 5, and the description thereof is omitted. In addition, the female metal fitting 20 of each Example mentioned above can be used in common for a female metal fitting.

この図13に示す雄型金具10′において、前述した各実施例における雄型金具10と異なるのは、挿入部11の第2の部分11cに長手方向に沿う細長い開口11gを形成した点だけである。この例では、挿入部11の幅方向の中央部11hを挟んでその両側に、長手方向に沿って細長い開口11gを形成している。   The male metal fitting 10 'shown in FIG. 13 is different from the male metal fitting 10 in the above-described embodiments only in that a long and narrow opening 11g is formed in the second portion 11c of the insertion portion 11 along the longitudinal direction. is there. In this example, elongated openings 11g are formed along the longitudinal direction on both sides of the center portion 11h in the width direction of the insertion portion 11.

このように、開口11gを設けることにより、後述するように雄型金具を鋳造によって作製した場合に、表面積が大きくなるため強度を高めることができ、それにバネ性を高めることができる。
物品を鋳造によって製造する場合、溶融した金属を鋳型に注入して固化させるが、その際に表面から固化が進むため、表面に近い部分程強度が高く粘りもある。そのため、表面積を大きくすることによって、強度及びバネ性を高めることができる。
Thus, by providing the opening 11g, when a male metal fitting is produced by casting as described later, the surface area is increased, so that the strength can be increased and the spring property can be increased.
When an article is manufactured by casting, molten metal is poured into a mold and solidified. However, since solidification proceeds from the surface at that time, the portion closer to the surface has higher strength and is more viscous. Therefore, the strength and the spring property can be increased by increasing the surface area.

なお、この細長い開口11gを挿入部11の第2の部分11cに設けることは必須ではなく、対向する第1の部分11bに設けてもよい。また、開口11gの数は2本に限らず、幅方向の中央部に1本、あるいは幅方向に間隔を置いて3本以上形成してもよい。
また、第2実施例の膨出部11fとこの開口11gとを組み合わせて、挿入部11の第1、第2の部分11b、11cの少なくとも一方に設ければ、より望ましい。
The elongated opening 11g is not necessarily provided in the second portion 11c of the insertion portion 11, and may be provided in the opposing first portion 11b. Further, the number of openings 11g is not limited to two, but may be one at the center in the width direction, or three or more at intervals in the width direction.
Further, it is more desirable that the bulging portion 11f of the second embodiment and the opening 11g are combined and provided in at least one of the first and second portions 11b and 11c of the insertion portion 11.

〔雄型金具のより好ましい実施例〕
次に、この発明による装身具用留め具における雄型金具のより好ましい実施例を、図14〜図22によって説明する。
図14はその雄型金具の側面図、図15は平面図、図16はその雄型金具を図14における右方から見た図である。これらの図において、図1〜図13と対応する部分には同一の符号を付しており、それらの説明は省略する。なお、この実施例においても、雌型金具は前述した各実施例の雌型金具20を共通に使用できる。
[Preferred embodiment of male metal fitting]
Next, a more preferred embodiment of the male fitting in the fastener for jewelry according to the present invention will be described with reference to FIGS.
14 is a side view of the male metal fitting, FIG. 15 is a plan view, and FIG. 16 is a view of the male metal fitting viewed from the right in FIG. In these drawings, portions corresponding to those in FIGS. 1 to 13 are denoted by the same reference numerals, and description thereof is omitted. Also in this embodiment, the female metal fitting 20 of each of the embodiments described above can be used in common as the female metal fitting .

この図14〜図16に示す雄型金具10″は、図14に明示するように、挿入部11のバネとして可動する第2の部分11cの第1の部分11bと対向する面(下面)に、図10〜図12に示した第2実施例と同様に、第1の部分11bに向かって曲面状に膨らんだ膨出部11fを設けている。図14〜図16は、第2の部分11cを第1の部分11bに対して膨出部11fが当接するまで、そのバネ力に抗して押さえ込んだ状態を示している。   As shown in FIG. 14, the male metal fitting 10 ″ shown in FIGS. 14 to 16 has a surface (lower surface) facing the first portion 11b of the second portion 11c movable as a spring of the insertion portion 11. 10 to 12, a bulging portion 11f that bulges in a curved shape toward the first portion 11b is provided in the same manner as the second embodiment shown in FIGS. 11c is shown in a state where it is pressed against the spring force until the bulging portion 11f abuts against the first portion 11b.

図14に示すAは、この雄型金具10″のリング状の係着部13を除く全長であり、Bは挿入部11の長さによるバネ性有効長である。そして、挿入部11の先端から膨出部11fの最も膨らんだ点までの距離Cが、バネ性有効長Bの10%〜20%程度になるようにするとよい。
この膨出部11fを設けたことによる効果は前述した第2実施例と同様であるが、図14に示すように、第2の部分11cの膨出部11fから後方の下面を凹曲面11i形成して、長手方向の中間部の厚さを減じる(薄くする)ことによって、一層バネ性を高めている。
A shown in FIG. 14 is the total length excluding the ring-shaped engaging portion 13 of the male metal fitting 10 ″, and B is the effective spring length due to the length of the insertion portion 11. And the tip of the insertion portion 11 The distance C from the bulging portion 11f to the most swollen point may be about 10% to 20% of the spring effective length B.
The effect obtained by providing the bulging portion 11f is the same as that of the second embodiment described above, but as shown in FIG. 14, a concave curved surface 11i is formed on the lower surface behind the bulging portion 11f of the second portion 11c. Thus, the spring property is further improved by reducing (thinning) the thickness of the intermediate portion in the longitudinal direction.

また、この雄型金具10″の挿入部11の第2の部分11cには、図13に示した例と同様に、図15に示す幅方向の中央部11hを挟んでその両側に、長手方向に沿って細長い開口11gを形成している。このように細長い開口11gを形成することによって、前述したように、雄型金具を鋳造によって作製した場合に第2の部分11cの表面積が大きくなるため、その強度を高めるとともにバネ性も高めることができる。   Similarly to the example shown in FIG. 13, the second portion 11c of the insertion portion 11 of the male metal fitting 10 ″ has a longitudinal direction on both sides of the center portion 11h in the width direction shown in FIG. By forming the elongated opening 11g in this way, as described above, the surface area of the second portion 11c increases when the male metal fitting is produced by casting. The strength can be increased and the spring property can be increased.

さらに、この雄型金具10″はつまみ部12にも特徴を有している。そのつまみ部12は図16に明示するように、一対のつまみ半部12aと12bを合わせた後端面形状(図14の右側から見た形状)が、つまみ半部12a,12bが互いに接近及び離間する方向を短径Dbとし、それに直交する(間隙14に沿う)方向を長径Daとする楕円形に形成されている。   Further, this male metal fitting 10 ″ is also characterized by a knob portion 12. The knob portion 12 is a rear end face shape (see FIG. 16) in which a pair of knob halves 12a and 12b are combined as clearly shown in FIG. 14 is formed in an elliptical shape in which the direction in which the knob halves 12a and 12b approach and separate from each other is the short diameter Db, and the direction perpendicular to it (along the gap 14) is the long diameter Da. Yes.

すなわち、つまみ部12を構成する一対のつまみ半部12aと12bは、その各後端面(挿入部11の挿入方向に直交する方向の横断面も)が楕円を長径Daに沿って2分割した半楕円形状であり、その分割面が間隙14を介して対向している。
図16に示すように、その楕円の短径Dbは、つまみ半部12aの短半径r1とつまみ半部12bの短半径r2の和(Db=r1+r2=2・r1=2・r2)である。そして、Da:Dbを3:2から2:1程度にするとよい。これによる効果については後述する。
That is, the pair of knob halves 12a and 12b constituting the knob part 12 has a half of each rear end face (and a cross section in a direction perpendicular to the insertion direction of the insertion part 11) divided into two along the major axis Da. It has an elliptical shape, and its dividing surface is opposed to the gap 14.
As shown in FIG. 16, the minor axis Db of the ellipse is the sum of the minor radius r1 of the knob half 12a and the minor radius r2 of the knob half 12b (Db = r1 + r2 = 2 · r1 = 2 · r2). And it is good to make Da: Db from about 3: 2 to about 2: 1. The effect of this will be described later.

また、このつまみ部12の各つまみ半部12aと12bは、いずれも軸方向(挿入部11の挿入方向)の両端部が楕円形フランジ状の大径部p,qとなり、その間に小径部sを有し、その小径部sが充分な溝幅を有する溝を形成している。つまみ部12をこのように形成したことによる効果についても後述する。
ここで、この実施例の雄型金具10″によるバネ性(弾性力)向上効果について、図17によって説明する。
Each knob half section 12a and 12b of the knob portion 12, the large diameter portion p both ends shaped oval flange both axial (insertion direction of the insertion portion 11), q, and the small-diameter portion s therebetween The small-diameter portion s forms a groove having a sufficient groove width. The effect obtained by forming the knob portion 12 in this way will also be described later.
Here, the effect of improving the spring property (elastic force) by the male metal fitting 10 ″ of this embodiment will be described with reference to FIG.

図17の(a)は、つまみ部12を矢示方向に最大限押圧して挿入部11の間隙14を完全に閉じた状態を示し、(b)〜(d)はその押圧力を解除することによって、挿入部11の第1の部分11bと第2の部分11cがそのバネ性すなわち弾性力によって開いていく状態を段階的に示している。
(b)の状態では第2の部分11cの膨出部11fがまだ第1の部分11bに当接しており、その当接点を支点として、第2の部分11cのそれよりつまみ部12側の部分がそのバネ性によって、図17で上方へ開くよう復元していく。
(A) of FIG. 17 shows the state which pressed the knob part 12 to the maximum in the arrow direction, and closed the gap | interval 14 of the insertion part 11, and (b)-(d) cancels the pressing force. Thus, the state in which the first portion 11b and the second portion 11c of the insertion portion 11 are opened by the spring property, that is, the elastic force is shown step by step.
In the state of (b), the bulging portion 11f of the second portion 11c is still in contact with the first portion 11b, and the portion closer to the knob portion 12 than that of the second portion 11c with the contact point as a fulcrum. However, due to its springiness, it is restored to open upward in FIG .

(c)の状態では、第2の部分11cの膨出部11fが第1の部分11bから僅かに離れ、以後は第2の部分11cが挿入部11の先端部を支点として、主に膨出部11fより先端側の部分のバネ性によって開いていく。(d)が完全に開いた状態である。
図17の(d)の状態から、つまみ部12を摘んで押圧し、第1の部分11bと第2の部分11cを間隙14を閉じるように変形させる場合は、上述と逆に(c)(b)(a)の順に閉じていく。
In the state of (c), the bulging portion 11f of the second portion 11c is slightly separated from the first portion 11b, and thereafter the second portion 11c mainly bulges with the distal end portion of the insertion portion 11 as a fulcrum. It opens by the spring property of the tip side of the part 11f. (D) is in a fully open state.
From state (d) in FIG 17, to press picking knob portion 12, when deforming the first portion 11b and the second portion 11c to close the gap 14, the above-described reverse (c) ( b) Close in the order of (a).

このように、この実施例の雄型金具10″は、挿入部11の第2の部分11cにその可動範囲の途中で第2の支点となる膨出部11fを設けるとともに、長手方向に沿って細長い開口11gを形成していることと、第2の部分11cの下面を凹曲面11iに形成して長手方向の中間部の厚さを薄くしたことによって、単一金属による鋳造品でも十分なバネ性が得られ、その弾性範囲が広がっている。したがって、挿入部11の第1の部分11bと第2の部分11cを、図17に示したように大きなストロークで開閉させることができる。 As described above, the male fitting 10 ″ of this embodiment is provided with the bulging portion 11f serving as the second fulcrum in the middle of the movable portion of the second portion 11c of the insertion portion 11 and along the longitudinal direction. Since the elongated opening 11g is formed and the lower surface of the second portion 11c is formed as a concave curved surface 11i to reduce the thickness of the intermediate portion in the longitudinal direction, a sufficient spring can be obtained even for a single metal casting. Therefore, the first portion 11b and the second portion 11c of the insertion portion 11 can be opened and closed with a large stroke as shown in FIG.

次に、つまみ部12を構成するつまみ半部12aと12bの各後端面形状(横断面形状も)を、楕円を長径に沿って2分割した半楕円形状にしたことによる効果を、図18及び図19によって説明する。   Next, the effects obtained by making each rear end face shape (also cross-sectional shape) of the knob halves 12a and 12b constituting the knob part 12 into a semi-elliptical shape by dividing the ellipse into two along the major axis are shown in FIG. This will be described with reference to FIG.

図18は、雄型金具のつまみ部12を構成するつまみ半部12aと12bの後端面形状が円を2分割した半円形状に形成されている場合に、雌型金具に挿入させて結合している雄型金具(図12)を引き抜く際の説明図である。間隙14は小さくなっているため、つまみ部12全体として略円形で殆ど方向性がなく、指で摘む位置を特定しにくい。しかも、間隙14を含めると間隙14に直交する方向にやや長い長円形になっているため、(a)に示すように隙間の両側端を押さえるように摘んでしまう可能性が高い。
そうすると、いくら強く摘んでも(b)に示すように、つまみ半部12aと12bを間隙14を閉じるように変形させることができず、雄型金具を雌型金具との係合を外して引き抜くことができない。
FIG. 18 shows a case where the rear end face shapes of the knob halves 12a and 12b constituting the knob portion 12 of the male metal fitting are formed in a semicircular shape obtained by dividing a circle into two, and are inserted into the female metal fitting and coupled. It is explanatory drawing at the time of pulling out the male type | mold metal fitting (FIG. 12). Since the gap 14 is small, the knob portion 12 as a whole is substantially circular and has almost no directionality, and it is difficult to specify the position to be picked by a finger. In addition, when the gap 14 is included, the shape is slightly longer in the direction orthogonal to the gap 14, so that there is a high possibility that the both ends of the gap are pressed as shown in FIG.
Then, no matter how hard it is picked, as shown in (b), the knob halves 12a and 12b cannot be deformed so as to close the gap 14, and the male fitting is disengaged from the female fitting and pulled out. I can't.

この実施例では、雄型金具10″のつまみ部12を構成するつまみ半部12aと12bの後端面形状(横断面形状も)が、楕円を長径に沿って2分割した半楕円形状に形成されているので、雌型金具から引き抜く際に、図19に示すようにつまみ部12全体として方向性がある。そのため、仮に(a)に示すように長径の両端を挟むように摘んだとしても、自然に(b)に示すように短径の両端を挟むように回転して摘めるようになる。   In this embodiment, the rear end face shapes (including cross-sectional shape) of the knob halves 12a and 12b constituting the knob portion 12 of the male metal fitting 10 ″ are formed into a semi-elliptical shape obtained by dividing the ellipse into two along the major axis. 19, when pulling out from the female metal fitting, there is a direction as the entire knob portion 12 as shown in Fig. 19. Therefore, even if it is picked so as to sandwich both ends of the long diameter as shown in (a), Naturally, as shown in (b), it can be picked by rotating so as to sandwich both ends of the short diameter.

したがって、つまみ半部12aと12bを間隙14を閉じるように変形させ、雄型金具を雌型金具との係合を外して引き抜く操作を容易に行うことができる。
ネックレスの留め具は、脱着の際に手を首の後ろに回して操作する。特に取り外す際には見えない状況で手探りで操作するため、このようにつまみ部の形状に方向性を持たせて、自然に操作できるようにするのが望ましい。
Therefore, it is possible to easily perform the operation of deforming the knob halves 12a and 12b so as to close the gap 14 and releasing the male metal fitting from the female metal fitting.
The necklace fastener is operated by turning the hand behind the neck when attaching and detaching. In particular, since the operation is carried out by groping in a situation that is not visible at the time of removal, it is desirable that the direction of the shape of the knob portion is such that it can be operated naturally.

さらに、この実施例の雄型金具10″は、つまみ部12の各つまみ半部12aと12bが、いずれも軸方向の両端部が楕円形フランジ状の大径部p,qとなり、その間に小径部sを有し、その小径部sが充分な溝幅を有する溝を形成していることによる効果について図20〜図22によって説明する。   Further, in the male metal fitting 10 ″ of this embodiment, each of the knob halves 12a and 12b of the knob part 12 has large diameter parts p and q having elliptical flanges at both ends in the axial direction. The effect obtained by forming the groove having the portion s and the small-diameter portion s having a sufficient groove width will be described with reference to FIGS.

図20に示す雄型金具10Aのつまみ部12Aのように、外周面の軸方向形状が単一の凸曲面であると、雄型金具を雌型金具から引き抜く操作をする際に、指が滑って引き抜けない恐れがある。
また、図21に示す雄型金具10のつまみ部12(第1、第2実施例に相当する)のように、外周面の軸方向形状が2つの凸曲面からなるようにすれば、図20に示した例よりは指が滑りにくくなり、雄型金具を雌型金具から引き抜き易くなる。しかし、雄型金具と雌型金具が強く係合している場合には、やはり指が滑って引き抜けなくなる恐れがある。
If the axial shape of the outer peripheral surface is a single convex curved surface like the knob portion 12A of the male metal fitting 10A shown in FIG. 20, the finger slips when the male metal fitting is pulled out from the female metal fitting. There is a risk that it will not pull out.
Further, if the axial shape of the outer peripheral surface is formed by two convex curved surfaces as in the knob portion 12 (corresponding to the first and second embodiments) of the male metal fitting 10 shown in FIG. The finger is less slippery than the example shown in FIG. 5, and the male metal fitting is easily pulled out from the female metal fitting. However, when the male metal fitting and the female metal fitting are strongly engaged, there is a risk that the finger will still slip and cannot be pulled out.

この実施例では、雄型金具10″のつまみ部12の各つまみ半部12aと12bが図22に示すように形成されているので、つまみ部12を指で摘んだ際に、各つまみ半部12aと12bの小径部sによる溝に指先(爪)が入り込み、引き抜く力が大径部qに効果的に加わって、雄型金具10″を容易に引き抜くことができる。   In this embodiment, the knob halves 12a and 12b of the knob portion 12 of the male metal fitting 10 ″ are formed as shown in FIG. 22, so that each knob half when the knob portion 12 is picked by a finger. The fingertip (claw) enters the groove formed by the small diameter portion s of 12a and 12b, and the pulling force is effectively applied to the large diameter portion q, so that the male metal fitting 10 ″ can be easily pulled out.

〔雌型金具の変形例〕
次に、雌型金具の変形例を図23及び図24によって説明する。図23及び図24は、この発明による装身具用留め具における雌型金具の他の異なる例を示す図8と同様な断面図であり、図8と対応する部分には同一の符号を付している。
図23に示す雌型金具20′は、内周に開口23aとそれに向かって拡開した円錐面状のガイド面23bとを形成し、外周が円筒面状のガイド部23′を、中空球形の本体20aの内面との間に一体に形成した複数本(例えば90°間隔で4本)の支持部25によって、挿入孔21と対向する所定の位置に支持している。
[Modification of female bracket]
Next, a modified example of the female metal fitting will be described with reference to FIGS. 23 and 24 are cross-sectional views similar to FIG. 8 showing another example of the female fitting in the fastener for jewelry according to the present invention, and the portions corresponding to those in FIG. Yes.
A female metal fitting 20 'shown in FIG. 23 has an opening 23a and a conical guide surface 23b widened toward the inner periphery thereof, and a guide portion 23' having a cylindrical outer periphery is formed into a hollow spherical shape. It is supported at a predetermined position facing the insertion hole 21 by a plurality of (for example, four at 90 ° intervals) support portions 25 formed integrally with the inner surface of the main body 20a.

図24に示す雌型金具20″は、むくに近い球形の本体20bの挿入孔21を形成した部分とその周縁部の内側に空洞22を形成し、その本体20bの内部のむくの部分に、空洞22への開口23aとそれに向かって拡開した円錐面状のガイド面23bとを形成し、その部分をガイド部23″としている。   The female metal fitting 20 ″ shown in FIG. 24 has a hollow spherical body 20b in which the insertion hole 21 is formed, and a cavity 22 is formed inside the peripheral portion thereof, and the inner part of the main body 20b has a hollow portion. An opening 23a to the cavity 22 and a conical guide surface 23b that expands toward the cavity 22 are formed, and this portion serves as a guide portion 23 ″.

このようなガイド部によっても、雄型金具の挿入部の挿入をガイドし、所定の挿入位置に保持することができる。なお、ガイド面23bの形状は種々に変更できる。
これらの雌型金具20′,20″も、前述した各実施例の雄型金具10、10′、10″のいずれとも組み合わせて使用することができ、それぞれ装身具用留め具を構成することができる。
With such a guide portion, the insertion of the insertion portion of the male metal fitting can be guided and held at a predetermined insertion position. The shape of the guide surface 23b can be variously changed.
These female metal fittings 20 ' and 20 "can also be used in combination with any of the male metal fittings 10, 10', and 10" of the above-described embodiments, and can constitute a fastener for jewelry. .

〔使用例〕
次に、図25を参照してこの発明による装身具用留め具の使用例について説明する。図25は、この発明による装身具用留め具によって真珠のネックレスの両端を連結させた状態の一例を示す図である。なお、そのネックレスは留め具を取り付けた両端部付近のみを示している。
〔Example of use〕
Next, with reference to FIG. 25, the usage example of the accessory fastener according to the present invention will be described. FIG. 25 is a view showing an example of a state in which both ends of a pearl necklace are connected by a fastener for jewelry according to the present invention. In addition, the necklace has shown only the vicinity of the both ends which attached the fastener.

多数の真珠31をワイヤで連接してネックレス30を形成しており、そのワイヤの一端部32aを雌型金具20の係着部24に係着し、他端部32bを雄型金具10の係着部13に係着している。
このネックレス30を着用者が首に掛けて、雌型金具20に雄型金具10の挿入部を挿入して連結すれば、無端状にすることができ、その後不用意にその連結が外れるような恐れはない。
A number of pearls 31 are connected by a wire to form a necklace 30, one end 32 a of the wire is engaged with the engagement portion 24 of the female metal fitting 20, and the other end 32 b is engaged with the male metal fitting 10. It is attached to the landing part 13.
If the wearer hangs the necklace 30 on the neck and inserts and inserts the insertion part of the male fitting 10 into the female fitting 20, the endless shape can be obtained, and then the connection is inadvertently released. There is no fear.

ネックレス30を外す際には、前述したように雄型金具10のつまみ半部12aと12bをつまんで押し合わせながら引張れば、雌型金具20から雄型金具10を容易に離脱させることができる。   When removing the necklace 30, as described above, the male metal fitting 10 can be easily detached from the female metal fitting 20 by holding and pulling the knob halves 12a and 12b of the male metal fitting 10 together. .

図25では、雄型金具10及び雌型金具20としているが、上述した各実施例や変形例の雄型金具10′又は10″や雌型金具20′又は20″を使用してもよいことは勿論である。
前述した各実施例の装身具用留め具は、両端部の連結及び離脱が必要な他の各種の装身具にも同様に使用することができる。
In FIG. 25, the male metal fitting 10 and the female metal fitting 20 are used. However, the male metal fitting 10 'or 10 "or the female metal fitting 20' or 20" of the above-described embodiments or modifications may be used. Of course.
The fasteners for jewelry according to each of the above-described embodiments can be used in the same manner for various other accessories that require connection and disconnection at both ends.

〔製造方法その他〕
以上説明した、この発明による装身具用留め具は、雄型金具と雌型金具を、それぞれ1個の部品で構成することができるため、組み付けの必要がなく、製造が容易で形状の自由度も大きい。
[Manufacturing method and others]
As described above, the fastener for jewelry according to the present invention can be configured with a single piece of male fitting and female fitting, so that it is not necessary to assemble, is easy to manufacture, and has a high degree of freedom in shape. large.

この雄型金具と雌型金具の材料としては、人にアレルギー反応を起こさせる等の悪影響を及ぼさない金属材料であれば何を使用してもよいが、貴金属である金、白金(プラチナ)、銀、銅、金合金または銀合金などが、加工性がよく且つ宝玉や貴金属の鎖などとマッチして装身具の高級感を保つことができてよい。特に、18金や金合金であるホワイトゴールドが最適である。   As the material of the male metal fitting and the female metal fitting, any metal material may be used as long as it does not have an adverse effect such as causing an allergic reaction to humans, but noble metals such as gold, platinum (platinum), Silver, copper, a gold alloy, a silver alloy, or the like has good workability and can match a jewel or a chain of precious metals to maintain a high-class feeling of the accessory. In particular, 18 gold or white gold which is a gold alloy is optimal.

なお、18金で雄型金具を作製する場合、一般的な18金の各金属の成分比率は重量比で、金75%、銀15%、銅10%程度であるが、バネ性を高めるために銀の比率を下げて銅の比率を高め、金75%、銀10%、銅15%程度にしたものを使用するとよい。   In addition, when producing a male metal fitting with 18 gold | metal | money, the component ratio of each metal of general 18 gold | metal | money is about 75% of gold | metal | money, silver 15%, and copper 10%, but in order to improve spring property In addition, the silver ratio is lowered to increase the copper ratio, and it is good to use gold 75%, silver 10% and copper 15%.

また、上述した各実施例の雄型金具及び雌型金具は、いずれも1個の一体形状の部材であるから、鋳造(キャスティング)によって容易に製造できる。鋳造によれば、雄型金具及び雌型金具を、それぞれ上述した金属材料によって一体成形することができるので、生産性が高く、工数を大幅に削減でき、金属材料のロスも少ない。   Moreover, since the male metal fitting and the female metal fitting of each Example mentioned above are all the members of one integral shape, they can be easily manufactured by casting (casting). According to casting, since the male metal fitting and the female metal fitting can be integrally formed with the above-described metal materials, the productivity is high, the number of man-hours can be greatly reduced, and the loss of the metal material is small.

特に、美術工芸品などの作製に適した消失型鋳造法の一種であるロストワックス製法によれば、比較的複雑な形状の鋳造も可能であるから、上記雄型金具及び雌型金具を作製するのに好適である。
この雄型金具と雌型金具を他の加工方法によって作製することもできる。しかし、例えば、プレス加工などによって雄型金具を作製する場合は、挿入部とつまみ部と係着部を個別にプレス形成した後、それらを一体に固着するなどの工程が必要になる。
In particular, according to the lost wax manufacturing method, which is a kind of disappearance casting method suitable for the production of arts and crafts, relatively complex shapes can be cast, so the male metal fitting and female metal fitting are produced. It is suitable for.
The male metal fitting and the female metal fitting can be produced by other processing methods. However, for example, when a male metal fitting is manufactured by pressing or the like, a process of pressing the insertion portion, the knob portion, and the engaging portion separately and then fixing them together is necessary.

また、雌型金具はその外側全体が見えるので、装身具の一部としてその形状や模様等のデザインが重要であるが、鋳造によれば任意の形状に成形することができ、同時に種々の模様を施すこともできる。その外形は球形に限らず、装身具全体の美感に合わせて様々な形状(例えば、立方体や多面体あるいは楕円球形、ハート形、その他任意の形状)に形成することができる。   In addition, since the entire outer side of the female metal fitting can be seen, the design of its shape and pattern is important as a part of jewelry, but it can be formed into an arbitrary shape by casting, and at the same time, various patterns can be formed. It can also be applied. The outer shape is not limited to a spherical shape, and can be formed in various shapes (for example, a cube, a polyhedron, an elliptical sphere, a heart shape, or any other shape) according to the aesthetics of the entire accessory.

前述した実施例では、雄型金具10の挿入部11の挿入方向に直交する断面(横断面)の形状が全体として略円形であり、雌型金具20の挿入孔21も円形なので、両者を連結する際に、挿入孔21と挿入部11の周方向の相対角度を意識する必要がなく、容易に両者を連結することができる。
ただし、雄型金具の挿入部の横断面形状は、円形に限るものではなく楕円形や四角形、多角形など他の形状にしてもよい。その場合、雌型金具の挿入孔の形状も、それに合わせた形状にすればよい。
In the embodiment described above, the shape of the cross section (transverse section) orthogonal to the insertion direction of the insertion portion 11 of the male metal fitting 10 is substantially circular as a whole, and the insertion hole 21 of the female metal fitting 20 is also circular. When doing so, it is not necessary to be aware of the relative angle in the circumferential direction between the insertion hole 21 and the insertion portion 11, and both can be easily connected.
However, the cross-sectional shape of the insertion part of the male metal fitting is not limited to a circle, but may be another shape such as an ellipse, a rectangle, or a polygon. In that case, the shape of the insertion hole of the female metal fitting may be made to match the shape.

以上、この発明の好ましい実施例及び変形例等について説明してきたが、この発明はこれらに限定されるものではなく、各実施例及び変形例に記載した構成を矛盾しない範囲で適宜組合せたり、変更したり、他の構成を追加したりすることができることは、当業者にとって適宜なし得ることである。   The preferred embodiments and modifications of the present invention have been described above. However, the present invention is not limited to these, and the configurations described in the embodiments and modifications may be appropriately combined or modified within a consistent range. However, it is possible for those skilled in the art to appropriately add other configurations.

この発明は、真珠や珊瑚、宝石などの宝玉にワイヤを挿通して多数個連接してなる数珠状の装身具、あるいは金、銀、プラチナ等の貴金属製の鎖状装身具、例えばネックレスやブレスレットなどの装身具において、その両端を連結して無端状にするための留め具として好適である。   This invention is a rosary accessory that is formed by connecting a number of pearls, jade, jewels and other jewels, and a chain accessory such as a necklace or a bracelet made of noble metal such as gold, silver, or platinum. In a jewelry, it is suitable as a fastener for connecting both ends thereof to make it endless.

10,10′,10″:雄型金具 11:挿入部 11a:先端部
11b:第1の部分 11c:第2の部分 11d:係合段部 11e:切欠部
11f:膨出部 11g:細長い開口 11h:第2の部分の中央部
11i:凹曲面 12:つまみ部 12a,12b:つまみ半部
13:雄型金具の係着部 14:間隙
20,20′,20″:雌型金具 20a,20b:雌型金具の本体 21:挿入孔
22:空洞 23,23′,23″:ガイド部 23a:開口 23b:ガイド面
24:雌型金具の係着部 25:支持部 30:ネックレス 31:真珠
10, 10 ', 10 ": Male metal fitting 11: Insertion part 11a: Tip part
11b: 1st part 11c: 2nd part 11d: Engagement step part 11e: Notch part 11f: Swelling part 11g: Elongated opening 11h: Center part of 2nd part
11i: concave curved surface 12: knob part 12a, 12b: knob half part
13: Male fitting engaging portion 14: Gap 20, 20 ', 20 ": Female fitting 20a, 20b: Female fitting main body 21: Insertion hole 22: Cavity 23, 23', 23": Guide portion 23a : Opening 23b: Guide surface 24: Engagement part of female metal fitting 25: Support part 30: Necklace 31: Pearl

Claims (5)

先端部に向かって先細り形状になった挿入部を有する雄型金具と、該雄型金具の前記挿入部が挿脱可能な挿入孔を有する雌型金具とからなる装身具用留め具であって、
前記雄型金具が、
前記挿入部の後端につまみ部を有し、前記挿入部の前記先端部が一体であって、他の部分が前記つまみ部から前記先端部に向かう方向に沿う楔状の間隙を介して対向し、前記先端部を支点として互いに接近及び離間可能なバネ性を有する第1の部分と第2の部分とからなり、その第2の部分の前記挿入部の後端部付近の外周側に前記雌型金具の挿入孔の周縁部と係合する係合段部が設けられ、
前記挿入部の前記第1の部分と第2の部分の互いに対向する面の一方の面に、他方の面に向かって膨出する膨出部が、前記挿入部の長手方向の中央よりも前記先端部寄りの位置に設けられ、
前記雌型金具が、
少なくとも前記挿入孔とその周縁部の内側に空洞を有すると共に、前記挿入孔と該空洞を介して対向する内部に、前記雄型金具の前記挿入部の挿入をガイドしてその挿入位置を保持するガイド部を有することを特徴とする装身具用留め具。
A fastener for a jewelry comprising a male metal fitting having an insertion portion tapered toward a distal end portion, and a female metal fitting having an insertion hole into which the insertion portion of the male metal fitting can be inserted and removed,
The male metal fitting is
There is a knob at the rear end of the insertion part, and the distal end of the insertion part is integrated, and the other part is opposed to the gap through a wedge-shaped gap along the direction from the knob to the distal end. The first portion and the second portion having spring properties that can approach and separate from each other with the tip portion as a fulcrum, and the female portion is disposed on the outer peripheral side of the second portion near the rear end portion of the insertion portion. An engagement step portion that engages with the peripheral edge portion of the insertion hole of the metal fitting is provided,
A bulging portion that bulges toward the other surface on one surface of the first portion and the second portion of the insertion portion facing each other is more than the center in the longitudinal direction of the insertion portion. It is provided at a position near the tip,
The female metal fitting is
A cavity is provided at least inside the insertion hole and the peripheral edge thereof, and the insertion position of the male metal fitting is guided and held at the inside facing the insertion hole via the cavity. A fastener for jewelry, comprising a guide portion.
前記雌型金具の前記ガイド部が、
前記挿入孔に対向する開口を有する内周凹面によるガイド面を形成し、該ガイド面が前記開口に向かって拡開していることを特徴とする請求項1に記載の装身具用留め具。
The guide portion of the female metal fitting is
The fastener for jewelry according to claim 1, wherein a guide surface is formed by an inner peripheral concave surface having an opening facing the insertion hole, and the guide surface is expanded toward the opening.
前記雄型金具の前記第1の部分と第2の部分のうち少なくとも前記第2の部分に、前記挿入部の長手方向に沿う細長い開口を1本又は複数本形成したことを特徴とする請求項1又は2に記載の装身具用留め具。   The one or more elongated openings along the longitudinal direction of the insertion portion are formed in at least the second portion of the first portion and the second portion of the male metal fitting. The fastener for jewelry according to 1 or 2. 前記雄型金具の前記つまみ部が、前記挿入部の前記第1の部分と一体のつまみ半部と前記第2の部分と一体のつまみ半部とからなり、その各つまみ半部の後端面が楕円を長径に沿って2分割した半楕円形状であり、その分割面が前記間隙を介して対向していることを特徴とする請求項1乃至3のいずれか一項に記載の装身具用留め具。   The knob portion of the male metal fitting includes a knob half portion integral with the first portion of the insertion portion and a knob half portion integral with the second portion, and a rear end surface of each knob half portion is The fastener for jewelry as claimed in any one of claims 1 to 3, wherein the ellipse has a semi-elliptical shape obtained by dividing the ellipse into two along the major axis, and the divided surfaces thereof are opposed to each other through the gap. . 前記雄型金具の前記挿入部の前記第1の部分と第2の部分のそれぞれ挿入方向に直交する方向の断面形状が半円形であり、前記雌型金具の前記挿入孔の内周が円形であることを特徴とする請求項1乃至4のいずれか一項に記載の装身具用留め具。   The cross-sectional shape in the direction orthogonal to the insertion direction of each of the first portion and the second portion of the insertion portion of the male metal fitting is a semicircle, and the inner periphery of the insertion hole of the female metal fitting is a circle. The fastener for jewelry according to claim 1, wherein the fastener is provided.
JP2011147804A 2011-07-02 2011-07-02 Trinkets for jewelry Expired - Fee Related JP6000517B2 (en)

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JPH08256810A (en) * 1995-03-24 1996-10-08 Yamakatsu Shinjiyu:Kk Fastener for necklace, etc.

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