JP3753756B2

JP3753756B2 - Nakadome of belt-like jewelry

Info

Publication number: JP3753756B2
Application number: JP11883795A
Authority: JP
Inventors: 秀夫田口; 淳輔炊江
Original assignee: Citizen Watch Co Ltd
Current assignee: Citizen Watch Co Ltd
Priority date: 1995-05-18
Filing date: 1995-05-18
Publication date: 2006-03-08
Anticipated expiration: 2021-03-08
Also published as: JPH08308617A

Description

【０００１】
【産業上の利用分野】
本発明は時計用バンド、ブレスレット等の帯状装身具を環状に連結するための連結金具に関し、特に、婦人用のブレスレット、時計のバンド等の幅の細い装身具に用いられるに適した連結金具としての中留に関する。
【０００２】
【従来の技術】
図１１はプッシュボタンを有する時計バンド用の従来の中留を示す。中留４０は一対のプッシュボタン４２が中留本体４１に形成された収容空間部４３内に摺動自在に設けられ、バンド（図示せず）の長手方向に対して横方向に動くようになっている。プッシュボタン４２は同一形状であり、収容空間部４３の中心に関し点対称に配置されている。各プッシュボタン４２は、半円形で、上向傾斜部を有し、互いに相対して配置された係合フック４４を有する。プッシュボタン４２間に、一対の戻しばね４５がプッシュボタンの長手方向に対して両側に設けられ、且つ点対称に配置されて、プッシュボタンを外方向に付勢している。更に、一対の抜け止めピン４６が対応するプッシュボタン４２に形成された溝４２ａに係合され、本体にカシメ固定されている。各プッシュボタン４２は抜け止めピン４６によってプッシュボタンの端部が本体４１から突出する位置で止められている。従って、プッシュボタンが本体から抜け出るのを止められている。
【０００３】
中留４０の一端には円筒状の連結部４７が形成され、ここに表板（図示せず）が回動可能に取付けられる。この表板の裏側には、例えば図１に示す半球状のヘッドを有する係合ピン２１が固定され、このピンが係合フック４４に係合するようになっている。
【０００４】
【発明が解決しようとする課題】
このような中留では、プッシュボタンと戻しばねが収容空間部内で平面的に且つ点対称に配置されているので、中留の幅が大きくなる。このような中留は婦人用の小さい幅のバンドに利用するのは困難である。
【０００５】
従って本発明の目的は、幅が狭く、また全体としても小型で、しかも強度のある中留を提供することである。
【０００６】
【課題を解決するための手段】
上記の目的を達成するため、第１の本発明による中留は、上部に開口を有し、帯状装身具の一端に連結される本体と、本体内に装身具の長手方向に関して横方向に摺動可能に設けられた一対のプッシュボタンと、本体の一端に回動自在に連結された表板とを有し、装身具の他端の連結かんの連結軸を本体と表板とで保持して装身具の両端を連結するようにした中留において、各プッシュボタンは操作部と、該操作部から内方に延びる腕部と、腕部の先端に形成された係合部を有し、一方のプッシュボタンの腕部はプッシュボタンの厚みの上半を占める上腕部を形成し、他方のプッシュボタンの腕部は下半を占める下腕部を形成し、上下腕部は平面において同一位置に設けられ、互いに重ねられていることと、プッシュボタンの間に設けられ、プッシュボタンを夫々外方向に付勢するばねと、前記ばねによって付勢された各プッシュボタンを、プッシュボタンの操作部が本体から突出された位置で止める停止手段と、表板の下側に固定され、プッシュボタンの係合部と係合するように設けられた係合ピンとより成ることを特徴とする。
特に、
「各プッシュボタンは、
操作部と、
該操作部から内方に延びる腕部と、
腕部の先端に形成された係止部と、
を有し、
一方のプッシュボタンの腕部は上腕部を形成し、
他方のプッシュボタンの腕部は下腕部を形成し、
上腕部が下腕部の上に摺動可能に重ねられて、
一方のプッシュボタンの係止部が、他方のプッシュボタンの係止部の上を越えて、一方のプッシュボタンと他方のプッシュボタンの係止部が対向して配置される」ことを特徴とする。
さらに、
「各プッシュボタンは凹部を有し、
プッシュボタンが押圧された状態において、
一方のプッシュボタンの係止部が他方のプッシュボタンの凹部内に位置し、
他方のプッシュボタンの係止部が一方のプッシュボタンの凹部内に位置する」
ことを特徴とする。
さらにまた、
「各プッシュボタンが１個の抜け止めピンに当接することによって、各プッシュボタンが、操作部が本体から突出する位置で止められる」
ことを特徴とする。
【０００７】
第２の本発明による中留は、第１の発明において、プッシュボタンの上下腕部はプッシュボタンの一側に片寄って配置されており、停止手段は本体に固定され、プッシュボタンの上下腕部の外側面に形成された切欠部の側壁に当接するように配置された抜け止めピンより成り、プッシュボタンの係合部は表板の係合ピンと係合する係合フックを有し、プッシュボタンの操作部と係合部は同じ厚さを有し、係合フックはその下側に形成された逃げ孔によって形成されたことを特徴とする。
【０００８】
第３の本発明による中留は、第１の発明において、プッシュボタンの上下腕部はプッシュボタンの略中央に位置されており、停止手段は本体に固定され、プッシュボタンの上下腕部の内側面に形成された切欠部の側壁に当接するように配置された抜け止めピンより成り、プッシュボタンの係合部は表板の係合ピンと係合する係合フックを有し、プッシュボタンの操作部と係合部は同じ厚さを有し、係合フックはその下側に形成された逃げ孔によって形成され、表板は基部の両側に形成された一対の連結突起と、その突起と一体に形成された横板とよりなることを特徴とする。
【０００９】
【作用】
中留の連結状態においては、装身具の一端の連結かんの連結軸がロックされた表板と中留本体との間に挟持されている。両プッシュボタンを押すと、その係合部が表板の係合ピンより外れ、表板が解放され、連結かんを中留本体より外すことができる。
【００１０】
【実施例】
以下、本発明の実施例を図面に基づいて詳細に説明する。図１は本発明の一実施例としての中留を示す斜視図、図２はその主要部分を示す切断平面図である。図１及び図２を参照するに、本発明の中留１は、時計バンド２の一端の駒２ａに回転自在に連結された中留本体３と、中留本体３の一端に回転自在に取り付けられた表板４と、バンドの他端の駒２ｂに回転可能に取付けられた連結かん２３より成る。
【００１１】
中留本体３は図１に示すように上面に凹部５を有し、ここに表板４が係合されるようになっている。また図２に示すように、本体内に幅方向に形成され、本体の両側面に開口する収容空間部６が形成され、凹部５に収容空間部６に連通する円形の開口７が形成されている。更に、本体の基部からは夫々連結孔３ｂを有する一対の連結脚部３ａが突出され、ピン２ｃを介してバンド端部の駒２ａと連結される。又連結脚部３ａと反対側では、凹部５の下方から支持腕８が突出され、その先端に円筒状の連結部９が形成されている。開きばね１０が、図２に示すように連結部９の大径孔内にに係合している。即ちばね１０の内端部は連結部９に固定されており、外端部は突出している。
【００１２】
一対のプッシュボタン１１、１２が収容空間部６内に納められ、バンドの長手方向に対して横方向に摺動できるようになっている。プッシュボタン１１、１２は略平面で線対称形状であり、収容空間部６内に線対称に一部分が重なって配置されている。
【００１３】
即ち、図３に示すように、一方のプッシュボタン１１は、収容空間部６から突出するように形成された操作部１１ａと、操作部１１ａの内側に形成された凹部１１ｂと、プッシュボタン１１の厚みの上半分の厚さを有し、プッシュボタン１１の上面と同一平面で凹部１１ｂの一端から内方に延び、内側に切欠部１５ａを有する上腕部１５と、上腕部１５の先端に凹部１１ｂと対応し、プッシュボタンの上下面と同一平面を有するように形成された係止部１７とを有する。係止部１７は、凹部１１ｂに対応する上端部に、半円形で、球面状の傾斜部２０ａを有する係合フック２０を有する。係止部１７の係合フック２０の下側には、図４に示すように段部を有する逃げ孔２０ｂが形成され、フックの係合部を形成している。
【００１４】
他方のプッシュボタン１２は、収容空間部６から突出するように形成された操作部１２ａと、操作部１２ａの内側に形成された凹部１２ｂとを有し、プッシュボタン１２の下面と同一平面で、プッシュボタンの厚みの下半分の厚さを有する下腕部１６が凹部１２ｂの一端から上腕部１５に対応して内方に延びている。下腕部１６はその内側に切欠部１６ａを有し、先端に凹部１２ｂに対応して、プッシュボタンの上下面と同一平面を有する係止部１８が形成される。係止部１８は係止部１７と同様に、凹部１２ｂに対応する半円形の係合フック２０ｃを有する。係合フック２０ｃは球面状の傾斜部２０ｄを有し、その下方には逃げ孔２０ｅが形成されている。
【００１５】
組み立てにおいて、プッシュボタン１１の上腕部１５がプッシュボタン１２の下腕部１６の上に摺動可能に重ねられる。即ち、係止部１７は係止部１８の上を越えて係合フック２０と係合フック２０ｃとが互いに対向して配置される。係合フック２０、２０ｃの下方の逃げ孔２０ｂ、２０ｅも互いに対向している。一対の戻しばね１３がプッシュボタン１１、１２の凹部１１ｂ、１２ｂの両側突出部１１ｃと１２ｃの間に夫々配置される。本体３の側面から収容空間部６にプッシュボタンと戻しばねを組合せたものを挿入し、１個の抜け止めピン１４が本体の凹部５に形成された孔に圧入され、抜け止めピン１４は上下腕部１５、１６の切欠部１５ａ、１６ａと係止部１７、１８との間に形成された空隙に係合し、その側壁に当接し、各プッシュボタン１１、１２は抜け止めピン１４によって操作部１１ａ、１２ａが本体３から突出する位置で止められている。本体３上の開口７はプッシュボタン１１、１２の係合フック２０、２０ｃに対応して形成されている。
【００１６】
表板４は、図５に示すように、下側に堅固に取付けられた係合ピン２１を有する。係合ピン２１は凹部５の開口７に対応する半球状のヘッド２１ａを有する。更に孔４ｂを有する一対の連結突起４ａが表板４の基部両側に設けられている。
【００１７】
図１に示すように、連結ピン２２が連結突起４ａの孔４ｂ及び開きばね１０を有する連結部９の孔に挿入されて、表板４が本体３に回転自在に連結される。連結部９に係合されたばね１０の外端部は表板４の下側に当接される。従って、表板４はばね１０によって外方向に付勢され、図１に示すように開かれる。
【００１８】
バンド２の他端の駒２ｂにピン２ｄにより連結された連結かん２３には横方向に連結軸２３ａが設けられている。
【００１９】
中留１を連結する方法を以下に説明する。表板４はバンド２の連結かん２３の連結軸２３ａの下方から挿入される。連結軸２３ａは本体３の支持腕８上に置かれ、表板４が連結ピン２２を中心に連結軸２３ａを越えて回転される。表板４が凹部５に当接するように押圧され、係合ピン２１が凹部５の開口７に挿入される。係合ピン２１の半球状ヘッド２１ａはプッシュボタン１１、１２の係合フック２０、２０ｃの傾斜部２０ａ、２０ｄと係合し、ばね１３の弾性力に抗してプッシュボタン１１、１２を夫々外方向に押す。半球状ヘッド２１ａが係合フックを通過すると、係合フックはばね１３によって戻され、係合ピン２１と係合する。一方ヘッド２１ａは係合フックの下方に形成された逃げ孔２０ｂ、２０ｅに係合する。これにより、バンド２の両端が連結される。
【００２０】
中留１を外すには、プッシュボタン１１、１２の操作部１１ａ、１２ａを同時に押圧する。これにより、係合フック２０、２０ｃが開き、係合ピン２１を解除する。この時、プッシュボタン１１、１２には凹部１１ｂ、１２ｂが形成されているので、係止部１７、１８が対応する凹部１２ｂ、１１ｂ内に位置され、夫々のプッシュボタンにぶつからないようになっている。係合ピン２１が解除されると、開きばね１０の端部が表板４の下側に当接し、表板を上方向に付勢しているので、表板４は自動的に開く。その後連結軸２３ａが支持腕８から外される。このようにして、連結かん２３が中留１から外される。
【００２１】
本実施例によればプッシュボタンが互いに部分的に重なっており、中留の幅が減少される。従って、小さい幅の装身具に利用できる。
【００２２】
上記第１実施例では、上下腕部１５、１６が細くなる傾向があり、強度が不足することがある。それを補うため、太くすると中留の幅が広くなる。又凹部５の開口７と抜け止めピン１４の孔が接近しているので、凹部５の壁が破れてしまう恐れがある。更に、表板４は係合ピンの半球状のヘッド２１ａのために、構造上その長手方向にスペ−スに余裕を持たせる必要がある。そのため表板の長さが長くなるが、表板が長いと外観が劣ることになる。
【００２３】
図６乃至図９は上記の問題を解消した本発明の第２実施例を示す。第１実施例と同一の部分は図１乃至図５と同じ参照符号で示される。中留２４は、前述の実施例と同様に、中留本体２５と表板２７とより成る。中留本体２５の凹部２６には矩形の開口２９が形成されている。収容空間部３０内に一対のプッシュボタン３１、３２が一部分重なって摺動自在に配置されている。
【００２４】
図８に示すように一方のプッシュボタン３１は、操作部３１ａと、その内側に形成された凹部３１ｂとを有する。プッシュボタン３１の厚みの上半分の厚さで、その上面と同一平面を有する上腕部３５が、操作部３１ａの略中央部から内方に延びており、外側に切欠部３５ａが形成されている。上腕部３５の内側部に、プッシュボタンの上下面と同一高さの上下面を有する、平面Ｕ字形の係止部３７が凹部３１ｂに向かい合って形成されている。係止部３７は、凹部３１ｂに対応する上端部に、下向傾斜部３９ａを有する係合フック３９を有する。係合フック３９の下側には逃げ孔３９ｂが形成され、フックの係合部を形成している。
【００２５】
他方のプッシュボタン３２は、プッシュボタン３１と線対称形状をなし、操作部３２ａと、凹部３２ｂとを有し、プッシュボタン３２の下面と同一平面で、その下半分の厚さを有する下腕部３６が、操作部３２ａの略中央部から上腕部３５に対応して内方に延びている。下腕部３６はその外側に切欠部３６ａを有し、その内側部にプッシュボタンの上下面と同一上下面を有する係止部３８が形成されている。係止部３８は係止部３７と同様に傾斜部３９ａを有する係合フック３９を有し、その下側には同様に逃げ孔３９ｂが形成されている。
【００２６】
組み立てにおいて、プッシュボタン３１の上腕部３５がプッシュボタン３２の下腕部３６に互いに摺動可能に重ねられる。係止部３７、３８がプッシュボタンの上面と同一の高さで、且つ係合フック３９が互いに対向して配置される。一対の戻しばね３３がプッシュボタン３１、３２の両側突出部３１ｃ、３２ｃの間に夫々取付けられる。この状態で本体２５の収容空間部３０内に挿入され、抜け止めピン３４が本体の凹部２６に形成された孔に圧入され、上下腕部３５、３６の切欠部３５ａ、３６ａ間で形成された空隙に係合する（図７）。従って、プッシュボタン３１、３２が本体２５から抜け出るのを止められている。凹部２６の矩形の開口２９はプッシュボタン３１、３２の係合フック３９に対応して形成されている。
【００２７】
図９に示すように、表板２７の下側に取付けられた係合ピン２８は平坦形のヘッド２８ａを有する。このヘッドは半球状のヘッドを表板の長手方向両側を平行に切除して半円形板状に形成されている。本体２５の凹部２６の矩形の開口２９はこのヘッドの形状に対応したものである。更に表板には一対の連結突起２７ａ間に一体に形成された横板２７ｂが形成されている。
【００２８】
中留２４の着脱方法は前述の実施例と同様である。即ち、表板２７をバンド２の連結かん２３の内側に通し、係合ピン２８が本体２５の凹部２６の矩形開口２９に挿入されると、係合ピン２８の平坦形ヘッド２８ａがプッシュボタン３１、３２の係合フック３９の傾斜部３９ａと係合し、戻しばね３３の弾性力に抗してプッシュボタン３１、３２を夫々外方向に押す。ヘッド２８ａが係合フック３９を通過すると、係合フックはばね３３によって戻され、係合ピン２８と係合し、ヘッド２８ａは係合フックの下側の逃げ孔３９ｂと係合する。プッシュボタン３１、３２の操作部３１ａ，３２ａを同時に押圧することによって、係合フック３９は係合ピン２８から外される。
【００２９】
本実施例ではプッシュボタンの上下腕部がプッシュボタンの操作部の略中央部から突出し、抜け止めピンの為の切欠部を腕部の外側に形成している。従って、上下腕部の幅を広くすることができるので強度が増す。又、抜け止めピンが係合する切欠部が外側に形成されているので、抜け止めピンの位置が凹部の開口から遠ざかり、本体の凹部の壁が破れにくくなる。
【００３０】
更に、表板の係合ピンのヘッドが長手方向に幅が狭くなっているので、表板はその長さが減少され、外観を向上させることができる。又、表板の基部を一体の横板で塞いでいるので、連結部が見えず中留の外観をより向上させ、しかも強度を増すことができる。
【００３１】
図１０は本発明の第３実施例を示す斜視図である。本実施例は第１実施例の中留１をブレスレット５０に適用したもので、中留本体３ｃ及び連結かん２３ｂは基端縁を円弧状にし、その部分にブレスレット５０の端部のリング５０ａをロ−付けにより連結したものである。中留の構造は第１実施例と同じで、その構成に付いての説明は省略する。
【００３２】
尚、上記実施例においては、中留本体３にリング５０をロ−付けで固定したが、中留本体３の基端縁に孔を明け、この孔にリング５０を挿入固定しても良い。又、形状の異なるブレスレットの場合は、ピン、ばね棒等の連結部材により中留本体と連結する。
【００３３】
【発明の効果】
以上の説明から明らかなように、本発明によればプッシュボタンが互いに部分的に上下に重なっているので、小さい幅の装身具に利用できる。更に、プッシュボタンの形状を選定し、又係合ピンのヘッドの形状を変えることにより、中留の形状をより小さく、しかも外観品質の向上と強度を増すことができる。
【図面の簡単な説明】
【図１】本発明の第１実施例としてのバンドと中留を示す斜視図である。
【図２】中留の主要部分を示す切断平面図である。
【図３】中留のプッシュボタンを示す分解斜視図である。
【図４】図２のＩＶ−ＩＶ線に沿う断面図である。
【図５】表板の斜視図である。
【図６】本発明の第２実施例としてのバンドと中留を示す斜視図である。
【図７】第２実施例の中留の主要部分を示す切断平面図である。
【図８】第２実施例のプッシュボタンを示す分解斜視図である。
【図９】第２実施例の表板の斜視図である。
【図１０】本発明の第３実施例を示す斜視図である。
【図１１】従来の中留の要部切断平面図である。
【符号の説明】
１中留
２時計バンド
２ａ、２ｂ駒
２ｃ、２ｄピン
３中留本体
３ａ連結脚部
３ｂ孔
３ｃ中留本体
４表板
４ａ連結突起
４ｂ孔
５凹部
６収容空間部
７円形開口
８支持腕
９連結部
１０開きばね
１１プッシュボタン
１１ａ操作部
１１ｂ凹部
１１ｃ突出部
１２プッシュボタン
１２ａ操作部
１２ｂ凹部
１２ｃ突出部
１３戻しばね
１４抜け止めピン
１５上腕部
１５ａ切欠部
１６下腕部
１６ａ切欠部
１７、１８係止部
２０、２０ｃ係合フック
２０ａ、２０ｄ傾斜部
２０ｂ、２０ｅ逃げ孔
２１係合ピン
２１ａ半球状ヘッド
２２連結ピン
２３連結かん
２３ａ連結軸
２３ｂ連結かん
２４中留
２５中留本体
２６凹部
２７表板
２７ａ連結突起
２７ｂ横板
２８係合ピン
２８ａ半円形板状ヘッド
２９矩形開口
３０収容空間部
３１プッシュボタン
３１ａ操作部
３１ｂ凹部
３１ｃ突出部
３２プッシュボタン
３２ａ操作部
３２ｂ凹部
３２ｃ突出部
３３戻しばね
３４抜け止めピン
３５上腕部
３５ａ切欠部
３６下腕部
３６ａ切欠部
３７、３８係止部
３９係合フック
３９ａ下向傾斜部
３９ｂ逃げ孔
５０ブレスレット
５０ａリング[0001]
[Industrial application fields]
The present invention relates to a connecting fitting for annularly connecting a band-shaped accessory such as a watch band or a bracelet, and particularly as a connecting fitting suitable for use in a narrow accessory such as a bracelet for women or a watch band. About the Toru.
[0002]
[Prior art]
FIG. 11 shows a conventional saddle for a watch band having a push button. The intermediate retainer 40 has a pair of push buttons 42 slidably provided in an accommodation space 43 formed in the intermediate retainer body 41, and moves in a lateral direction with respect to the longitudinal direction of a band (not shown). ing. The push buttons 42 have the same shape and are arranged point-symmetrically with respect to the center of the accommodation space 43. Each push button 42 is semicircular, has an upwardly inclined portion, and has an engagement hook 44 disposed opposite to each other. A pair of return springs 45 are provided between the push buttons 42 on both sides with respect to the longitudinal direction of the push buttons, and are arranged point-symmetrically to urge the push buttons outward. Further, a pair of retaining pins 46 are engaged with grooves 42a formed in the corresponding push buttons 42, and are caulked and fixed to the main body. Each push button 42 is stopped by a retaining pin 46 at a position where the end of the push button protrudes from the main body 41. Therefore, the push button is prevented from coming out of the main body.
[0003]
A cylindrical connecting portion 47 is formed at one end of the middle ring 40, and a front plate (not shown) is rotatably attached thereto. An engagement pin 21 having, for example, a hemispherical head shown in FIG. 1 is fixed to the back side of the front plate, and this pin is engaged with the engagement hook 44.
[0004]
[Problems to be solved by the invention]
In such middle ends, the push buttons and the return springs are arranged in a plane and point-symmetrically within the accommodation space, so that the width of the middle ends is increased. Such a saddle is difficult to use for a small band for women.
[0005]
Accordingly, an object of the present invention is to provide a middle end having a narrow width, a small overall size, and a high strength.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the first embodiment of the present invention has an opening at the top, a main body connected to one end of the belt-like accessory, and can slide in the transverse direction with respect to the longitudinal direction of the accessory in the main body. A pair of push buttons provided on the main body and a front plate rotatably connected to one end of the main body, and holding the connection shaft of the connecting rod at the other end of the main body with the main body and the front plate. Each push button has an operating portion, an arm portion extending inwardly from the operating portion, and an engaging portion formed at the tip of the arm portion, and one push button in the middle ring that connects both ends. The upper arm portion occupies the upper half of the thickness of the push button, the other push button arm portion forms the lower arm portion, the upper and lower arm portions are provided at the same position in the plane, Between each other and between the push buttons, A spring for urging the push button outward, a stop means for stopping each push button urged by the spring at a position where the operation portion of the push button protrudes from the main body, and a lower side of the front plate. And an engaging pin provided to engage with the engaging portion of the push button.
In particular,
“Each push button
An operation unit;
An arm portion extending inward from the operation portion;
A locking part formed at the tip of the arm part;
Have
The arm of one push button forms the upper arm,
The arm of the other push button forms the lower arm,
The upper arm is slidably stacked on the lower arm,
The locking portion of one push button extends over the locking portion of the other push button, and the locking portion of one push button and the other push button are arranged opposite to each other. .
further,
“Each push button has a recess,
When the push button is pressed,
The locking part of one push button is located in the recess of the other push button,
The locking part of the other push button is located in the recess of one push button. ''
It is characterized by that.
Furthermore,
“Each push button comes into contact with one retaining pin, so that each push button is stopped at a position where the operation portion protrudes from the main body.”
It is characterized by that.
[0007]
According to a second aspect of the present invention, in the first invention, the upper and lower arms of the push button are arranged to be offset toward one side of the push button, the stopping means is fixed to the main body, and the upper and lower arms of the push button. The push button includes a retaining pin disposed so as to be in contact with the side wall of the notch formed on the outer surface of the push button, and the push button engagement portion has an engagement hook that engages with the engagement pin of the front plate. The operating portion and the engaging portion have the same thickness, and the engaging hook is formed by an escape hole formed on the lower side thereof.
[0008]
According to a third aspect of the present invention, in the first invention, the upper and lower arms of the push button are positioned at substantially the center of the push button, the stopping means is fixed to the main body, and the inner portion of the upper and lower arms of the push button It consists of retaining pins arranged so as to contact the side wall of the notch formed on the side, and the engaging part of the push button has an engaging hook that engages with the engaging pin of the front plate, and the operation of the push button The engaging portion has the same thickness, the engaging hook is formed by a relief hole formed on the lower side thereof, and the front plate is integrally formed with a pair of connecting protrusions formed on both sides of the base portion. And a horizontal plate formed on the surface.
[0009]
[Action]
In the state where the middle ends are connected, the connecting shaft of the connecting rod at one end of the accessory is sandwiched between the locked front plate and the main body. When both push buttons are pressed, the engaging portion is disengaged from the engaging pin of the front plate, the front plate is released, and the connecting can is removed from the main body.
[0010]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a middle ring as an embodiment of the present invention, and FIG. Referring to FIGS. 1 and 2, a saddle 1 according to the present invention is attached to a middle body 3 that is rotatably connected to a piece 2 a at one end of a watch band 2, and is rotatably attached to one end of the middle body 3. And a connecting rod 23 rotatably attached to the piece 2b at the other end of the band.
[0011]
As shown in FIG. 1, the middle end main body 3 has a concave portion 5 on the upper surface, and a front plate 4 is engaged therewith. Further, as shown in FIG. 2, a housing space 6 is formed in the body in the width direction and opens on both side surfaces of the body, and a circular opening 7 communicating with the housing space 6 is formed in the recess 5. Yes. Further, a pair of connecting leg portions 3a each having a connecting hole 3b protrude from the base portion of the main body, and are connected to the piece 2a at the band end portion via a pin 2c. On the side opposite to the connecting leg 3a, the support arm 8 protrudes from below the recess 5, and a cylindrical connecting portion 9 is formed at the tip thereof. The opening spring 10 is engaged in the large diameter hole of the connecting portion 9 as shown in FIG. That is, the inner end portion of the spring 10 is fixed to the connecting portion 9 and the outer end portion protrudes.
[0012]
A pair of push buttons 11 and 12 are housed in the accommodating space 6 and can slide in the lateral direction with respect to the longitudinal direction of the band. The push buttons 11 and 12 are substantially plane and line symmetrical, and are partially overlapped in the accommodating space 6 with line symmetry.
[0013]
That is, as shown in FIG. 3, one push button 11 includes an operation portion 11 a formed so as to protrude from the accommodation space portion 6, a recess 11 b formed inside the operation portion 11 a, and the push button 11. The upper arm portion 15 has an upper half thickness, extends inward from one end of the recess 11 b in the same plane as the upper surface of the push button 11, and has a notch 15 a inside, and the recess 11 b at the tip of the upper arm portion 15. And a locking portion 17 formed so as to be flush with the upper and lower surfaces of the push button. The latching | locking part 17 has the engagement hook 20 which has the semicircular and spherical inclined part 20a in the upper end part corresponding to the recessed part 11b. As shown in FIG. 4, an escape hole 20b having a stepped portion is formed below the engaging hook 20 of the locking portion 17 to form an engaging portion of the hook.
[0014]
The other push button 12 has an operation portion 12a formed so as to protrude from the accommodation space portion 6 and a recess 12b formed inside the operation portion 12a, and is flush with the lower surface of the push button 12. A lower arm portion 16 having a lower half thickness of the push button extends inwardly from one end of the recess 12 b in correspondence with the upper arm portion 15. The lower arm portion 16 has a notch portion 16a on the inner side, and a locking portion 18 having the same plane as the upper and lower surfaces of the push button is formed at the tip corresponding to the concave portion 12b. Similarly to the locking portion 17, the locking portion 18 has a semicircular engagement hook 20 c corresponding to the recess 12 b. The engaging hook 20c has a spherical inclined portion 20d, and a relief hole 20e is formed below the inclined portion 20d.
[0015]
During assembly, the upper arm portion 15 of the push button 11 is slidably overlaid on the lower arm portion 16 of the push button 12. That is, the engaging portion 17 is disposed over the engaging portion 18 so that the engaging hook 20 and the engaging hook 20c face each other. The escape holes 20b and 20e below the engagement hooks 20 and 20c are also opposed to each other. A pair of return springs 13 are disposed between the protruding portions 11c and 12c on both sides of the recesses 11b and 12b of the push buttons 11 and 12, respectively. A combination of a push button and a return spring is inserted into the housing space 6 from the side surface of the main body 3, and one retaining pin 14 is press-fitted into a hole formed in the concave portion 5 of the main body. Engage with the gap formed between the notches 15a and 16a of the arm portions 15 and 16 and the locking portions 17 and 18 and abut against the side walls. The push buttons 11 and 12 are operated by the retaining pins 14. The parts 11a and 12a are stopped at positions where they protrude from the main body 3. The opening 7 on the main body 3 is formed corresponding to the engagement hooks 20 and 20c of the push buttons 11 and 12.
[0016]
As shown in FIG. 5, the front plate 4 has engaging pins 21 that are firmly attached to the lower side. The engagement pin 21 has a hemispherical head 21 a corresponding to the opening 7 of the recess 5. Further, a pair of connecting projections 4 a having holes 4 b are provided on both sides of the base portion of the front plate 4.
[0017]
As shown in FIG. 1, the connecting pin 22 is inserted into the hole 4 b of the connecting protrusion 4 a and the hole of the connecting portion 9 having the opening spring 10, so that the front plate 4 is rotatably connected to the main body 3. The outer end portion of the spring 10 engaged with the connecting portion 9 is brought into contact with the lower side of the front plate 4. Therefore, the front plate 4 is urged outward by the spring 10 and is opened as shown in FIG.
[0018]
The connecting rod 23 connected to the piece 2b at the other end of the band 2 by a pin 2d is provided with a connecting shaft 23a in the lateral direction.
[0019]
A method for connecting the middle ends 1 will be described below. The front plate 4 is inserted from below the connecting shaft 23 a of the connecting can 23 of the band 2. The connecting shaft 23 a is placed on the support arm 8 of the main body 3, and the front plate 4 is rotated about the connecting pin 22 over the connecting shaft 23 a. The front plate 4 is pressed so as to contact the recess 5, and the engagement pin 21 is inserted into the opening 7 of the recess 5. The hemispherical head 21a of the engagement pin 21 engages with the inclined portions 20a and 20d of the engagement hooks 20 and 20c of the push buttons 11 and 12, and removes the push buttons 11 and 12 against the elastic force of the spring 13, respectively. Push in the direction. When the hemispherical head 21 a passes through the engagement hook, the engagement hook is returned by the spring 13 and engaged with the engagement pin 21. On the other hand, the head 21a engages with escape holes 20b and 20e formed below the engagement hook. Thereby, both ends of the band 2 are connected.
[0020]
In order to remove the middle ring 1, the operation portions 11 a and 12 a of the push buttons 11 and 12 are simultaneously pressed. Thereby, the engagement hooks 20 and 20c are opened, and the engagement pin 21 is released. At this time, since the recesses 11b and 12b are formed in the push buttons 11 and 12, the locking portions 17 and 18 are positioned in the corresponding recesses 12b and 11b so that they do not hit each push button. Yes. When the engagement pin 21 is released, the end of the opening spring 10 abuts on the lower side of the front plate 4 and urges the front plate upward, so that the front plate 4 automatically opens. Thereafter, the connecting shaft 23 a is removed from the support arm 8. In this way, the connecting can 23 is removed from the middle ring 1.
[0021]
According to the present embodiment, the push buttons partially overlap each other, and the width of the middle ends is reduced. Therefore, it can be used for accessories with a small width.
[0022]
In the first embodiment, the upper and lower arm portions 15 and 16 tend to be thin, and the strength may be insufficient. To make up for it, the width of Nakadome becomes wider when thicker. Moreover, since the opening 7 of the recess 5 and the hole of the retaining pin 14 are close to each other, the wall of the recess 5 may be broken. Further, because the front plate 4 is a hemispherical head 21a of an engaging pin, it is necessary to provide a space in the longitudinal direction in terms of the structure. Therefore, the length of the front plate becomes long, but if the front plate is long, the appearance is inferior.
[0023]
6 to 9 show a second embodiment of the present invention in which the above problem is solved. The same parts as those in the first embodiment are denoted by the same reference numerals as those in FIGS. The middle ring 24 includes a middle body 25 and a front plate 27 as in the above-described embodiment. A rectangular opening 29 is formed in the concave portion 26 of the middle end main body 25. A pair of push buttons 31, 32 are partially slidably disposed in the accommodation space 30.
[0024]
As shown in FIG. 8, one push button 31 has an operation part 31a and a recessed part 31b formed inside thereof. An upper arm portion 35 that is an upper half thickness of the push button 31 and has the same plane as the upper surface thereof extends inward from a substantially central portion of the operation portion 31a, and a notch portion 35a is formed on the outer side. . On the inner side of the upper arm portion 35, a flat U-shaped locking portion 37 having an upper surface and a lower surface that is the same height as the upper and lower surfaces of the push button is formed facing the concave portion 31b. The locking portion 37 has an engagement hook 39 having a downward inclined portion 39a at the upper end corresponding to the recess 31b. A relief hole 39b is formed on the lower side of the engagement hook 39 to form an engagement portion of the hook.
[0025]
The other push button 32 has a symmetrical shape with the push button 31, has an operation portion 32a and a recess 32b, is the same plane as the bottom surface of the push button 32, and has a lower half thickness. 36 extends inwardly from the substantially central portion of the operation portion 32 a in correspondence with the upper arm portion 35. The lower arm portion 36 has a cutout portion 36a on the outer side, and a locking portion 38 having the same upper and lower surfaces as the upper and lower surfaces of the push button is formed on the inner side portion. Similarly to the locking portion 37, the locking portion 38 has an engaging hook 39 having an inclined portion 39a, and a relief hole 39b is similarly formed on the lower side thereof.
[0026]
In assembly, the upper arm portion 35 of the push button 31 is slidably overlapped with the lower arm portion 36 of the push button 32. The engaging portions 37 and 38 are arranged at the same height as the upper surface of the push button, and the engaging hooks 39 are arranged to face each other. A pair of return springs 33 are attached between the protruding portions 31c, 32c of the push buttons 31, 32, respectively. In this state, it is inserted into the accommodating space 30 of the main body 25, and a retaining pin 34 is press-fitted into a hole formed in the concave portion 26 of the main body, and is formed between the notches 35a and 36a of the upper and lower arm portions 35 and 36. Engage with the gap (FIG. 7). Accordingly, the push buttons 31 and 32 are prevented from coming out of the main body 25. A rectangular opening 29 of the recess 26 is formed corresponding to the engagement hook 39 of the push buttons 31 and 32.
[0027]
As shown in FIG. 9, the engaging pin 28 attached to the lower side of the front plate 27 has a flat head 28a. This head is formed in a semicircular plate shape by cutting a hemispherical head in parallel on both longitudinal sides of the front plate. A rectangular opening 29 in the recess 26 of the main body 25 corresponds to the shape of the head. Further, a horizontal plate 27b formed integrally between the pair of connecting projections 27a is formed on the front plate.
[0028]
The method for attaching and detaching the middle retainer 24 is the same as in the above-described embodiment. That is, when the front plate 27 is passed through the inside of the connecting rod 23 of the band 2 and the engaging pin 28 is inserted into the rectangular opening 29 of the recess 26 of the main body 25, the flat head 28 a of the engaging pin 28 is moved to the push button 31. , 32 engages with the inclined portion 39a of the engagement hook 39, and pushes the push buttons 31, 32 outward against the elastic force of the return spring 33, respectively. When the head 28a passes through the engaging hook 39, the engaging hook is returned by the spring 33 and engages with the engaging pin 28, and the head 28a engages with the escape hole 39b on the lower side of the engaging hook. By simultaneously pressing the operation portions 31 a and 32 a of the push buttons 31 and 32, the engagement hook 39 is removed from the engagement pin 28.
[0029]
In this embodiment, the upper and lower arm portions of the push button protrude from the substantially central portion of the operation portion of the push button, and a notch portion for a retaining pin is formed outside the arm portion. Therefore, the width of the upper and lower arms can be increased, and the strength is increased. Further, since the notch portion with which the retaining pin is engaged is formed on the outside, the position of the retaining pin is moved away from the opening of the recessed portion, and the wall of the recessed portion of the main body is hardly broken.
[0030]
Furthermore, since the head of the engaging pin of the front plate is narrow in the longitudinal direction, the length of the front plate can be reduced and the appearance can be improved. Further, since the base portion of the front plate is closed with an integral horizontal plate, the connecting portion cannot be seen and the appearance of the middle end can be further improved and the strength can be increased.
[0031]
FIG. 10 is a perspective view showing a third embodiment of the present invention. In the present embodiment, the middle end 1 of the first embodiment is applied to the bracelet 50, and the middle end main body 3c and the connecting rod 23b have arcuate base edges, and the ring 50a at the end of the bracelet 50 is formed in that portion. It is connected by the attachment. The structure of Nakadome is the same as that of the first embodiment, and the description of the structure is omitted.
[0032]
In the above-described embodiment, the ring 50 is fixed to the middle end main body 3 by means of a roller. In the case of a bracelet having a different shape, the bracelet body is connected by a connecting member such as a pin or a spring bar.
[0033]
【The invention's effect】
As is apparent from the above description, according to the present invention, the push buttons partially overlap each other, so that the push buttons can be used for accessories having a small width. Further, by selecting the shape of the push button and changing the shape of the head of the engagement pin, the shape of the middle terminal can be made smaller, and the appearance quality and strength can be increased.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a band and a middle clip as a first embodiment of the present invention.
FIG. 2 is a cut-out plan view showing the main part of the middle end.
FIG. 3 is an exploded perspective view showing a push button for a middle end.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view of a front plate.
FIG. 6 is a perspective view showing a band and a middle ring as a second embodiment of the present invention.
FIG. 7 is a cut-away plan view showing the main part of the middle end of the second embodiment.
FIG. 8 is an exploded perspective view showing a push button of a second embodiment.
FIG. 9 is a perspective view of a front plate of a second embodiment.
FIG. 10 is a perspective view showing a third embodiment of the present invention.
FIG. 11 is a plan view of an essential part of a conventional middle end.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Middle end 2 Watch band 2a, 2b Piece 2c, 2d Pin 3 Middle end main body 3a Connection leg part 3b Hole 3c Middle end main body 4 Front plate 4a Connection protrusion 4b Hole 5 Recess 6 Storage space part 7 Circular opening 8 Support arm 9 Connection Part 10 Opening spring 11 Push button 11a Operation part 11b Recess 11c Projection 12 Push button 12a Operation part 12b Recess 12c Projection 13 Return spring 14 Retaining pin 15 Upper arm 15a Notch 16 Lower arm 16a Notch 17, 18 Stop portions 20 and 20c Engagement hooks 20a and 20d Inclined portions 20b and 20e Escape holes 21 Engagement pins 21a Hemispherical heads 22 Connection pins 23 Connection rods 23a Connection shafts 23b Connection rods 24 Middle ends 25 Middle ends main bodies 26 Recesses 27 Surface plates 27a Connecting projection 27b Horizontal plate 28 Engaging pin 28a Semi-circular plate-shaped head 29 Rectangular opening 30 Accommodating space 31 Push-button Tan 31a Operation part 31b Recess 31c Projection 32 Push button 32a Operation part 32b Recess 32c Projection 33 Return spring 34 Retaining pin 35 Upper arm 35a Notch 36 Lower arm 36a Notch 37, 38 Locking part 39 Engagement hook 39a Downward inclined portion 39b Escape hole 50 Bracelet 50a Ring

Claims

A main body connected to one end of the belt-like jewelry;
A pair of push buttons provided in the body so as to be slidable laterally with respect to the longitudinal direction of the accessory;
A spring for urging each push button outward;
Stop means for stopping each push button biased by a spring at a position where the operation portion of the push button protrudes from the main body,
A front plate rotatably connected to one end of the main body;
An engagement pin fixed to the lower side of the front plate and engaged with the locking portion of the push button;
Including
A middle ring that holds the connecting shaft of the connecting cane at the other end of the accessory with the main body and the front plate and connects both ends of the accessory ,
Each push button
An operation unit;
An arm portion extending inward from the operation portion;
A locking part formed at the tip of the arm part;
Have
The arm of one push button forms the upper arm,
The arm of the other push button forms the lower arm,
The upper arm is slidably stacked on the lower arm,
A middle clip in which the locking portion of one push button extends over the locking portion of the other push button and the locking portion of one push button and the other push button face each other.

A main body connected to one end of the belt-like jewelry;
A pair of push buttons provided in the body so as to be slidable laterally with respect to the longitudinal direction of the accessory;
A spring for urging each push button outward;
Stop means for stopping each push button biased by a spring at a position where the operation portion of the push button protrudes from the main body,
A front plate rotatably connected to one end of the main body;
An engagement pin fixed to the lower side of the front plate and engaged with the locking portion of the push button;
Including
A middle ring that holds the connecting shaft of the connecting cane at the other end of the accessory with the main body and the front plate and connects both ends of the accessory ,
Each push button has a recess,
When the push button is pressed,
The locking part of one push button is located in the recess of the other push button,
A middle clip in which the engaging part of the other push button is located in the recess of one push button .

A main body connected to one end of the belt-like jewelry;
A pair of push buttons provided in the body so as to be slidable laterally with respect to the longitudinal direction of the accessory;
A spring for urging each push button outward;
Stop means for stopping each push button biased by a spring at a position where the operation portion of the push button protrudes from the main body,
A front plate rotatably connected to one end of the main body;
An engagement pin fixed to the lower side of the front plate and engaged with the locking portion of the push button;
Including
A middle ring that holds the connecting shaft of the connecting cane at the other end of the accessory with the main body and the front plate and connects both ends of the accessory ,
A middle clip in which each push button is stopped at a position where the operation part protrudes from the main body by abutting one retaining pin .

The middle ring according to claim 1,
The upper arm of one push button occupies the upper half of the push button thickness ,
The lower arm of the other push button occupies the lower half of the push button thickness ,
The upper and lower arm portions are provided at the same position on the plane, and are stacked with each other .

The middle ring according to any one of claims 1 to 3,
Clasps provided with opening spring that urges the body and table plates the top plate in the open position.

The middle ring according to any one of claims 1 to 3,
The retaining pin has a hemispherical head on its top .

The middle ring according to claim 1,
The upper and lower arms of the push button are a center pin that is placed on one side of the push button .

The middle ring according to claim 1,
The upper and lower arms of the push button is a middle clip located at the approximate center of the push button .

The middle ring according to any one of claims 1 to 3,
The stop means is a center pin that is fixed to the main body and comprises a retaining pin that is disposed so as to abut against the side wall of the notch formed on the side surface of the upper and lower arms of the push button .

The middle ring according to any one of claims 1 to 3,
It has an open spring that urges the front plate outward,
Opening spring is a coil spring, clasp disposed between the connecting portion formed on the main body, a pin coupled to the top plate.

The middle ring according to any one of claims 1 to 3,
The spring is a pair of return springs arranged on both sides of the push button .

The middle ring according to any one of claims 1 to 3,
The front plate is a middle plate made up of a pair of connecting projections formed on both sides of the base and a horizontal plate formed integrally with the projection .

The middle ring according to any one of claims 1 to 3,
The latching part of the push button has a hook that engages with the engaging pin of the front plate.

The middle ring according to any one of claims 1 to 3,
Both push buttons are Nakadome which is formed in a line symmetrical shape on a plane .

The middle ring according to claim 9,
The notch is a middle clip formed inside the upper and lower arms .

The middle ring according to claim 9,
A notch is a middle clip formed outside the upper and lower arms .

The middle ring according to claim 13,
The operation part and the locking part of the push button have the same thickness, and the engaging hook is a middle pin formed by a relief hole formed on the lower side .

The middle ring according to claim 17,
The upper and lower arms of the push button are offset to one side of the push button, and the stopping means is fixed to the main body so as to contact the side wall of the notch formed on the outer surface of the upper and lower arms of the push button. The push button engagement portion has an engagement hook that engages with the engagement pin of the front plate, and the operation portion and the engagement portion of the push button have the same thickness. The mating hook is a middle ring formed by a relief hole formed underneath .

The middle ring according to claim 17,
The upper and lower arms of the push button are positioned substantially at the center of the push button, and the stopping means is fixed to the main body and is arranged so as to contact the side wall of the notch formed on the inner surface of the upper and lower arms of the push button. The push button engagement portion has an engagement hook that engages with the engagement pin of the front plate, and the operation portion and the engagement portion of the push button have the same thickness. Is formed by a relief hole formed on the lower side thereof, and the front plate is a middle plate made up of a pair of connecting projections formed on both sides of the base and a horizontal plate formed integrally with the projection .

A band-shaped accessory comprising the middle ring according to any one of claims 1 to 19.

A timepiece band comprising the middle ring according to any one of claims 1 to 19.

A timepiece comprising the middle ring according to any one of claims 1 to 19.