JP3873183B2

JP3873183B2 - Nut structure

Info

Publication number: JP3873183B2
Application number: JP2000373597A
Authority: JP
Inventors: 邦昭榊原; 正樹青木; 幹也浅井; 貴雄鈴木
Original assignee: Inax Corp
Current assignee: Inax Corp
Priority date: 1999-12-08
Filing date: 2000-12-07
Publication date: 2007-01-24
Anticipated expiration: 2020-12-07
Also published as: JP2001227521A

Description

【０００１】
【産業上の利用分野】
この発明は、ナットの構造に関するものである。
【０００２】
【従来の技術及びその課題】
従来、例えば図１１に示すように、便器本体１の後部上面にロータンク２をタンク取付ボルト３により固定するに際し、図１２の断面拡大図で示すように、ロータンク２側に、三角パッキン４を介在させてタンク取付ボルト３を通し孔２ａに通し、ロータンク２の底側にワッシャ８で六角ナット９を締め付けておき、便器本体１側の通し孔１ａを通してタンク取付ボルト３を垂下させて、便器本体１側の底側から、タンク取付ボルト３の下端に対し、ワッシャ１１を介在させて六角ナット１０を締め付けてロータンク２を固定しており、この際、金属製の六角ナット１０をスパナとかレンチで締め付ける作業は、トイレ内の狭い場所での締付作業となり、締付作業が行いにくく、また、どれくらい締め付ければ良いのか判断しにくく、六角ナット１０を締め付け過ぎると、便器本体１の陶器が割れてしまうことがあるという問題点があった。
【０００３】
【課題を解決するための手段】
本発明は上記従来の問題点に鑑み案出したものであって、手で容易に締め付けることができ、しかも締め付け過ぎることのないナット構造を提供せんことを目的とし、その第１の要旨は、ボルトの雄ネジに螺合される雌ネジを内側に有し、外側にクラッチ部が形成されてなる内部材と、該内部材のクラッチ部と係合可能なクラッチ部を内周に有して内部材に外挿される手回し可能な外部材で構成されたナット構造において、前記内部材は、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体が連結片で折り曲げ可能に連結されて構成され、前記連結片を折り曲げて一方の半筒体に対し他方の半筒体を整合させてその下端を前記外部材内へ嵌め込んだ状態で、前記ボルトの外周に前記内部材を差し込み、前記外部材を回して前記内部材を前記ボルトに締め付ける時に、一定トルク以上で前記クラッチ部が噛み合って節度感のある音を発するように構成したことである。
また、第２の要旨は、前記クラッチ部は、回転方向に複数条形成されたセレーションで構成され、前記一定トルク以上で、外部材のセレーションが内部材のセレーションに節度感のある音を発しながら噛み合うように構成したことである。
また、第３の要旨は、ボルトの雄ネジに螺合される雌ネジを内側に有し、外側にクラッチ部が形成されてなる内部材と、該内部材のクラッチ部と係合するクラッチ部を内周に有して内部材に外挿される手回し可能な外部材で構成されたナット構造において、前記内部材は、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体が連結片で折り曲げ可能に連結されて構成され、前記連結片を折り曲げて一方の半筒体に対し他方の半筒体を整合させてその下端を前記外部材内へ嵌め込んだ状態で、前記ボルトの外周に前記内部材を差し込み、前記外部材を回して前記内部材を前記ボルトに締め付ける時に、一定トルク以上で前記クラッチ部の係合が解除されて前記外部材が空転するように構成したことである。
また、第４の要旨は、前記クラッチ部は、回転方向に複数条形成されたセレーションで構成され、前記一定トルク以上で、外部材のセレーションが内部材のセレーションを節度感のある音を発しながら乗り越えるように構成したことである。
【０００４】
【実施例】
以下、本発明の第１実施例を図面に基づいて説明する。
図１は、前記図１１に示すように、便器本体１の後部上面にロータンク２を固定する際の、ボルトとナットの断面構成図であり、また図２は、締め付け後における固定状態を示すものである。
【０００５】
ロータンク２に貫通形成された通し孔２ａに、上方側よりタンク取付ボルト３を三角パッキン４を介在させて垂下させ、ロータンク２の底側よりワッシャ８を介在させてタンク取付ボルト３に六角ナット９を締め付けて、予めタンク取付ボルト３がロータンク２に固定されており、この状態で、便器本体１上にロータンク２を載せ、便器本体１に貫通形成されている通し孔１ａ内にタンク取付ボルト３の下端側を通して垂下させ、このタンク取付ボルト３の下端側に、パッキン５を介在させて、内部材６と外部材７からなるナットで締め付けて固定するものである。
【０００６】
本例における内部材６と外部材７の分解斜視図を図３に示し、また、図４では内部材を開けた状態の斜視図を示し、また、図５では外部材を裏返した状態の斜視図を示す。
【０００７】
先ず、内部材６を詳細に説明すると、内部材６は、図４に示すように、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体６１ａ，６１ｂを有し、一方側の半筒体６１ａ内には、雌ネジ６２ａの半分が形成されており、また、上端側には外方向へ突出して鍔部６３ａが形成され、この鍔部６３ａからは係合突起６４ａが突出されており、鍔部６３ａの他方側には係合溝６５ａが凹み状に形成されたものとなっている。
同様に、他方側の半筒体６１ｂの先端にも、外側へ突出して鍔部６３ｂが形成され、この鍔部６３ｂの下面には係合突起６４ｂが突出され、さらに係合溝６５ｂが凹み状に形成されたものとなっており、一方の半筒体６１ａと他方の半筒体６１ｂは、連結片６６で折り曲げ可能に連結されたものとなっている。
【０００８】
また、内部材６の鍔部６３ａには、雌ネジ部６２ａを囲むように突出して係止突起６８ａが形成されており、係止突起６８ａには、ワッシャ１０を嵌め込むことのできる係入溝Ｍが形成されたものとなっている。同様に、他方側の鍔部６３ｂにも係止突起６８ｂが形成されて、係入溝Ｍが形成されている。
また、鍔部６３ａの外周には、凹状に切り欠いて切欠６９ａが形成されており、他方側の鍔部６３ｂにも切欠６９ｂが切欠形成されたものとなっている。
【０００９】
このような内部材６は、一方の半筒体６１ａに対し、他方の半筒体６１ｂを図３に示すように連結片６６を折り曲げて整合させると、一方側の雌ネジ６２ａと他方側の雌ネジ６２ｂが整合状態となり、この時に、一方側の係合突起６４ａが他方側の係合溝６５ｂ内に係合し、また、一方側の係合溝６５ａ内に他方側の係合突起６４ｂが係合するものとなっている。
【００１０】
また、図３に示すように、内部材６の半筒体６１ａ及び６１ｂの下端側の外周には、セレーション６７ａ，６７ｂが外側へ突出して形成されており、このセレーション６７ａ，６７ｂは、円周方向に、例えば３本の平行な突条で形成されて、このセレーション６７ａ，６７ｂがクラッチ部を構成している。
また、図３に示すように、内部材６の半筒体６１ａ及び６１ｂの外周には、外側へ膨出して膨出部Ｐ，Ｐが形成されており、この膨出部Ｐ，Ｐは、セレーション６７ａ，６７ｂの延長線上に形成されたものとなっている。
【００１１】
なお、内部材６の半筒体６１ａと６１ｂを整合させた状態で、図３のように係入溝Ｍ内にワッシャ１０を嵌め込むことにより、鍔部６３ａと６３ｂが外側へ広がることが良好に防がれ、作業が行いやすいように構成されている。なお、係止突起６８ａ，６８ｂの上面外周は傾斜状に面取りされてワッシャ１０の嵌め付け作業を容易に行なえるものとなっている。
【００１２】
一方、外部材７は、筒状の本体部７１の内側に、前記内部材６が整合状態で差し込まれる挿通穴７２が形成されており、この挿通穴７２の下端側の内周に、対向した位置にセレーション７３ａ及び７３ｂが形成されており、このセレーション７３ａ及び７３ｂも、周方向に４本平行にそれぞれ縦方向に凹ませてセレーション溝が形成されたものであり、この対向するセレーション７３ａ，７３ｂが外部材７のクラッチ部を構成したものとなっている。
また、外部材の本体部７１の外側には、対向状に外方向へ突出して縦方向の手回し用突条７４ａ，７４ｂが形成されており、また、本体部７１の上端側は外側へ突出した鍔部７６となっており、鍔部７６の下方の本体部７１に窓部７５，７５が対向状に形成されている。
【００１３】
また、外部材７の鍔部７６の外周側には、対向状に一対のストッパー突起７７，７７が上方へ突出形成されており、このストッパー突起７７，７７は、前記内部材６の切欠６９ａ，６９ｂにそれぞれ係合できる位置に形成されたものである。
また、外部材７の鍔部７６の内周側には、傾斜状に一対のガイド部７８，７８が形成されており、ガイド部７８，７８の下方側の挿通穴７２の内周には、縦方向に一対の縦溝７９，７９が凹み状に形成されている。また、各縦溝７９，７９の上端は、前記窓部７５，７５に臨んでおり、窓部７５，７５の下辺には縦溝７９，７９との仕切り用の突起８０，８０が上方へ突出形成されている。
【００１４】
前記内部材６は、ポリアミド樹脂内にガラス繊維を混合した材料で形成されたものであり、また、外部材７は、ＰＰ樹脂内にガラス繊維を混合した材料で形成されたものとなっており、締付作業等により、樹脂が劣化しても破損に至らない材質や厚みに設定されている。
【００１５】
なお、予め外部材７に内部材６が嵌め付けられて出荷されるものであり、内部材６の半筒体６１ａ，６１ｂの下端を外部材７の挿通穴７２内へ嵌め込んでおくのであるが、この場合、外部材のガイド部７８，７８に沿って内部材６のセレーション６７ａ，６７ｂを外部材７の挿通穴７２内に滑り込ませ、容易に嵌め込むことができ、セレーション６７ａ，６７ｂは外部材の縦溝７９，７９内に入り込むが、この状態で外部材７を僅かに回転させて、セレーション６７ａ，６７ｂが縦溝７９，７９から外れて突起８０，８０を乗り越え、窓部７５，７５内に嵌まって窓部７５，７５で保持された状態としておく、この状態では、突起８０，８０により、セレーション６７ａ，６７ｂが縦溝７９，７９側へ移動することが防がれ、内部材６が回転することがない。
【００１６】
この出荷状態では、外部材７の鍔部７６から上方へ内部材６が長い寸法で突出した状態となっており、内部材６の半筒体６１ａ，６１ｂは開いた状態となっているため、容易に内部材６を現場でタンク取付ボルト３に下方より嵌め込むことができるものである。
現場でタンク取付ボルト３の外周に内部材６を差し込んだ状態で、外部材７を少し回すと、外部材７の縦溝７９，７９内に内部材６のセレーション６７ａ，６７ｂが入り込み、この状態で、外部材７を内部材６に沿って上方へ滑らせて、外部材７の挿通穴７２内に内部材６を完全に入り込ませ、外部材７の鍔部７６と内部材６の鍔部６３ａ，６３ｂを当接状態とすることができ、この状態では、内部材６の切欠６９ａ，６９ｂ内に外部材７のストッパー突起７７，７７が入り込んだ状態となる。
【００１７】
この状態で、外部材７の手回し用突条７４ａ，７４ｂに指を掛けながら外部材７を回して締め付けると、外部材７のセレーション７３ａ，７３ｂと内部材６のセレーション６７ａ，６７ｂが係合して、外部材７と共に内部材６が回転し、内部材６の雌ネジ６２ａ，６２ｂがタンク取付ボルト３に螺進されて、内部材６の係止突起６８ａ，６８ｂがパッキン５に強く押し付けられて締め付けられることとなる。
締め付け力が所定のトルク以上となると、節度感のあるカチカチカチという音を発しながら、外部材７のセレーション７３ａ，７３ｂが内部材６のセレーション６７ａ，６７ｂに乗り上がって噛み合い状態となる。
【００１８】
なお、この状態では、外部材７の挿通穴７２の内周面が内部材６の膨出部Ｐに当接して、内部材６の半筒体６１ａ，６１ｂを内側へ押圧することとなり、雌ネジ６２ａ，６２ｂの内径が縮められた状態となって、タンク取付ボルト３の雄ネジ３ａへのネジの掛かり具合が強くなり、雄ネジ３ａに対し雌ネジ６２ａ，６２ｂが強固に螺合されることとなる。
【００１９】
内部材６のセレーション６７ａ，６７ｂに対し外部材７のセレーション７３ａ，７３ｂが噛み合った状態で、更に外部材７を回転させようとすると、ストッパー突起７７，７７が内部材６の切欠６９ａ，６９ｂの端部に当接して、内部材６と外部材７が一体化した状態となる。
なお、カチカチという音が発生し、かつ、ストッパー突起７７，７７が切欠６９ａ，６９ｂの端部に当接して内部材６と外部材７が一体化した後に、手で外部材７を１回転ぐらい締め付けることにより、最適なトルクでロータンク２が便器本体１に固定され、かつ水密性が確保されるように設計されている。
【００２０】
従って、作業者は、外部材７を手で締め付けて、カチカチカチという音が発生した後に、外部材７を１回転ぐらい締め込めば良く、工具を使用することなく手で容易に締付作業を行うことができ、従来のようにスパナ等で狭い所で締め付ける作業を行う必要がなく、また、締め付け過ぎて便器本体１の陶器を割ってしまうようなことがない。
なお、本例では、便器本体上にロータンク２を取付け固定させる場合のナット構造を例示しているが、この内部材６と外部材７からなるナット構造は、他の部材の締め付け固定にも有効に利用することができるものである。
【００２１】
次に、本発明の第２実施例を説明する。
図６は、便器本体１の後部上面にロータンク２を固定する際の、ボルトとナットの断面構成図であり、また図７は、締め付け後における固定状態を示すものである。なお、第１実施例と同一部材については、同一符号を付して説明する。
【００２２】
ロータンク２に貫通形成された通し孔２ａに、上方側よりタンク取付ボルト３を三角パッキン４を介在させて垂下させ、ロータンク２の底側よりワッシャ８を介在させて取付ボルト３に六角ナット９を締め付けて、予めタンク取付ボルト３がロータンク２に固定されており、この状態で、便器本体１上にロータンク２を載せ、便器本体１に貫通形成されている通し孔１ａ内にタンク取付ボルト３の下端側を通して垂下させ、このタンク取付ボルト３の下端側に、パッキン５を介在させて、内部材６と外部材７からなるナットで締め付けて固定するものである。
なお、内部材６と外部材７の分解斜視図を図８に示し、また、図９では内部材を開けた状態の斜視図を示し、また、図１０では外部材を裏返した状態の斜視図を示す。
【００２３】
先ず、内部材６を説明すると、内部材６は、図９に示すように、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体６１ａ，６１ｂを有し、一方側の半筒体６１ａ内には、雌ネジ６２ａの半分が形成されており、また、上端側には外方向へ突出して鍔部６３ａが形成され、この鍔部６３ａからは係合突起６４ａが突出されており、鍔部６３ａの他方側には係合溝６５ａが凹み状に形成されたものとなっている。
同様に、他方側の半筒体６１ｂの先端にも、外側へ突出して鍔部６３ｂが形成され、この鍔部６３ｂの下面には係合突起６４ｂが突出され、さらに係合溝６５ｂが凹み状に形成されたものとなっており、一方の半筒体６１ａと他方の半筒体６１ｂは、連結片６６で折り曲げ可能に連結されたものとなっている。
【００２４】
このような内部材６は、一方の半筒体６１ａに対し、他方の半筒体６１ｂを図８に示すように連結片６６を折り曲げて整合させると、一方側の雌ネジ６２ａと他方側の雌ネジ６２ｂが整合状態となり、この時に、一方側の係合突起６４ａが他方側の係合溝６５ｂ内に係合し、また、一方側の係合溝６５ａ内に他方側の係合突起６４ｂが係合するものとなっている。また、図８に示すように、内部材６の半筒体６１ａ及び６１ｂの下端側の外周には、セレーション６７ａ，６７ｂが外側へ突出して形成されており、このセレーション６７ａ，６７ｂは、円周方向に、例えば３本の平行な突条で形成されて、このセレーション６７ａ，６７ｂがクラッチ部を構成している。
【００２５】
一方、外部材７は、筒状の本体部７１の内側に、前記内部材６が整合状態で差し込まれる挿通穴７２が形成されており、この挿通穴７２の下端側の内周に、対向した位置にセレーション７３ａ及び７３ｂが形成されており、このセレーション７３ａ及び７３ｂも、周方向に４本平行にそれぞれ縦方向に凹ませてセレーション溝が形成されたものであり、この対向するセレーション７３ａ，７３ｂが外部材７のクラッチ部を構成したものとなっている。
また、外部材の本体部７１の外側には、対向状に外方向へ突出して縦方向の手回し用突条７４ａ，７４ｂが形成されており、また、本体部７１の上端側は外側へ突出した鍔部７６となっており、その下方に窓部７５が形成されたものとなっている。
【００２６】
なお、予め外部材７に内部材６が嵌め付けられて出荷されるものであり、この出荷状態では、外部材７の鍔部７６から上方へ内部材６が長い寸法で突出した状態となっており、内部材６の半筒体６１ａ，６１ｂは開いた状態となっているため、容易に内部材６を現場でタンク取付ボルト３に下方より嵌め込むことができる。
この状態で、内部材６の外周に、外部材７を上方側へ差し込んで、外部材７の手回し用突条７４ａ，７４ｂに指を掛けながら外部材７を締め付けると、外部材７のセレーション７３ａ，７３ｂと内部材６のセレーション６７ａ，６７ｂが係合して、外部材７と共に内部材６が回転し、内部材６の雌ネジ６２ａ，６２ｂがタンク取付ボルト３に螺合されて、内部材６の鍔部６３ａ，６３ｂがパッキン５に強く押し付けられて締め付けられることとなり、所定のトルク以上で、外部材７のセレーション７３ａ，７３ｂが内部材６のセレーション６７ａ，６７ｂに噛み込み、節度感のあるカチカチカチという音を発しながら、外部材７のセレーション７３ａ，７３ｂが内部材６のセレーション６７ａ，６７ｂを乗り越えると、外部材７は空転し、その状態で締め付けを完了すると、所定のトルクで内部材６が締め付け固定されて、最適なトルクでロータンク２が便器本体１に固定され、かつ水密性が確保されるように設計されている。
【００２７】
【発明の効果】
本発明のナット構造は、ボルトの雄ネジに螺合される雌ネジを内側に有し、外側にクラッチ部が形成されてなる内部材と、該内部材のクラッチ部と係合可能なクラッチ部を内周に有して内部材に外挿される手回し可能な外部材で構成されたナット構造において、前記内部材は、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体が連結片で折り曲げ可能に連結されて構成され、前記連結片を折り曲げて一方の半筒体に対し他方の半筒体を整合させてその下端を前記外部材内へ嵌め込んだ状態で、前記ボルトの外周に前記内部材を差し込み、前記外部材を回して前記内部材を前記ボルトに締め付ける時に、一定トルク以上で前記クラッチ部が噛み合って節度感のある音を発するように構成したことにより、容易に内部材をボルトに嵌め込むことができ、外部材を手で回すことにより、良好に内部材をボルトに締め付けてゆくことができ、手で簡単に締付作業を行うことができるものとなり、また、一定トルク以上では節度感のある音を発する構造となっているため、締め付け過ぎることがなく、締め付け過ぎて陶器等を割ってしまうことがなくなる効果を有する。
【００２８】
また、クラッチ部は、回転方向に複数条形成されたセレーションで構成され、一定トルク以上で、外部材のセレーションが内部材のセレーションに節度感のある音を発しながら噛み合うように構成したことにより、外部材を一定トルク以上で回すと、外部材のセレーションが内部材のセレーションに節度感のあるカチカチカチという音を発しながら噛み合うため、節度感のある音により施工者はナットの締付状態を確認でき、必要以上に締め付け過ぎることがなくなる効果を有する。
【００２９】
また、ボルトの雄ネジに螺合される雌ネジを内側に有し、外側にクラッチ部が形成されてなる内部材と、該内部材のクラッチ部と係合するクラッチ部を内周に有して内部材に外挿される手回し可能な外部材で構成されたナット構造において、前記内部材は、円筒体を縦方向に中央部で切断した半断面形状の一対の半筒体が連結片で折り曲げ可能に連結されて構成され、前記連結片を折り曲げて一方の半筒体に対し他方の半筒体を整合させてその下端を前記外部材内へ嵌め込んだ状態で、前記ボルトの外周に前記内部材を差し込み、前記外部材を回して前記内部材を前記ボルトに締め付ける時に、一定トルク以上で前記クラッチ部の係合が解除されて前記外部材が空転するように構成したことにより、容易に内部材をボルトに嵌め込むことができ、外部材を手で回すことにより、良好に内部材をボルトに締め付けてゆくことができ、手で簡単に締付作業を行うことができるものとなり、また、一定トルク以上では外部材が空転するクラッチ構造となっているため、締め付け過ぎることがなく、締め付け過ぎて陶器等を割ってしまうことがなくなる効果を有する。
【００３０】
また、クラッチ部は、回転方向に複数条形成されたセレーションで構成され、一定トルク以上で、外部材のセレーションが内部材のセレーションを節度感のある音を発しながら乗り越えるように構成したことにより、外部材を一定トルク以上で回すと、外部材のセレーションが内部材のセレーションを節度感のあるカチカチカチという音を発しながら乗り越えるため、この節度感のある音により施工者はナットの締付状態を確認でき、必要以上に締め付け過ぎることがなくなる効果を有する。
【図面の簡単な説明】
【図１】ロータンクを便器本体に取り付けるに際し、ボルトの下端にナットを構成する内部材と外部材を嵌め込んだ状態の断面拡大構成図である。
【図２】締め付け完了後の状態を示す図１に対応させた断面構成図である。
【図３】ナットを構成する内部材と外部材の分解斜視図である。
【図４】内部材を開けた状態の斜視構成図である。
【図５】外部材を逆さ向けにした斜視構成図である。
【図６】第２実施例を示し、ボルトの下端にナットを構成する内部材と外部材を嵌め込んだ状態の断面拡大構成図である。
【図７】締め付け完了後の状態を示す図６に対応させた断面構成図である。
【図８】ナットを構成する内部材と外部材の分解斜視図である。
【図９】内部材を開けた状態の斜視構成図である。
【図１０】外部材を逆さ向けにした斜視構成図である。
【図１１】便器本体の後部上面にロータンクを取り付ける状態の斜視構成図である。
【図１２】従来の六角ナットによる締付固定構造を示す断面拡大図である。
【符号の説明】
１便器本体
１ａ通し孔
２ロータンク
２ａ通し孔
３タンク取付ボルト
４三角パッキン
５パッキン
６内部材
７外部材
９六角ナット
１０ワッシャ
６１ａ，６１ｂ半筒体
６２ａ，６２ｂ雌ネジ
６３ａ，６３ｂ鍔部
６４ａ，６４ｂ係合突起
６５ａ，６５ｂ係合溝
６６連結片
６７ａ，６７ｂセレーション（クラッチ部）
６８ａ，６８ｂ係止突起
６９ａ，６９ｂ切欠[0001]
[Industrial application fields]
The present invention relates to a structure of a nut.
[0002]
[Prior art and problems]
Conventionally, for example, as shown in FIG. 11, when the row tank 2 is fixed to the upper surface of the rear portion of the toilet body 1 with the tank mounting bolt 3, a triangular packing 4 is interposed on the row side of the row tank 2 as shown in the enlarged sectional view of FIG. The tank mounting bolt 3 is passed through the through hole 2a, the hexagonal nut 9 is tightened with a washer 8 on the bottom side of the low tank 2, and the tank mounting bolt 3 is suspended through the through hole 1a on the toilet body 1 side. The row tank 2 is fixed by tightening the hexagon nut 10 from the bottom side of the 1 side to the lower end of the tank mounting bolt 3 with a washer 11 interposed. At this time, the metal hexagon nut 10 is fixed with a spanner or a wrench. The tightening work is a tightening work in a confined area in the toilet. It is difficult to perform the tightening work, and it is difficult to determine how much tightening is required. Too tightened bets 10, there is a problem that may occur when pottery toilet body 1 is cracked.
[0003]
[Means for Solving the Problems]
The present invention has been devised in view of the above-mentioned conventional problems, and aims to provide a nut structure that can be easily tightened by hand and that is not excessively tightened. An inner member having a female screw that is screwed into a male screw of the bolt and having a clutch portion formed on the outer side, and a clutch portion that can be engaged with the clutch portion of the inner member are provided on the inner periphery. In the nut structure composed of a hand-turnable outer member that is externally inserted into the inner member, the inner member can be bent by a pair of half-cylinders having a semi-sectional shape obtained by cutting the cylindrical body at the center in the vertical direction. The connecting piece is bent, the other half cylinder is aligned with one half cylinder, and the lower end is fitted into the outer member. Insert the timber, the inner turning said outer member The when tightening the bolt, it is that configured to emit a sound with a click feeling by the clutch unit is engaged at least a predetermined torque.
In addition, the second gist is that the clutch portion is composed of serrations formed in a plurality of strips in the rotation direction, and the serration of the outer member emits a sound with a moderate feeling in the serration of the inner member at the predetermined torque or more. It is configured to mesh.
The third gist is an inner member having a female screw that is screwed into a male screw of the bolt on the inside, and a clutch portion formed on the outer side, and a clutch portion that engages with the clutch portion of the inner member. In the nut structure composed of a hand-wound outer member that is externally inserted into the inner member, and the inner member is a pair of half-cylinders having a semi-sectional shape in which a cylindrical body is cut at a central portion in a longitudinal direction. In a state where the body is configured to be foldable with a connecting piece, the connecting piece is bent, the other half cylinder is aligned with one half cylinder, and the lower end is fitted into the outer member, The inner member is inserted into the outer periphery of the bolt, and when the outer member is turned to tighten the inner member to the bolt, the clutch member is disengaged at a certain torque or more and the outer member is idled. It is that.
Further, the fourth gist is that the clutch portion is composed of serrations formed in a plurality of strips in the rotational direction, and the serration of the outer member emits a moderate sound with the serration of the inner member above the predetermined torque. It was configured to get over.
[0004]
【Example】
A first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a cross-sectional configuration diagram of bolts and nuts when the low tank 2 is fixed to the rear upper surface of the toilet body 1 as shown in FIG. 11, and FIG. 2 shows a fixed state after tightening. It is.
[0005]
A tank mounting bolt 3 is suspended from above through a through hole 2a formed in the low tank 2 with a triangular packing 4 interposed therebetween, and a hexagonal nut 9 is attached to the tank mounting bolt 3 with a washer 8 interposed from the bottom side of the low tank 2. The tank mounting bolt 3 is fixed to the low tank 2 in advance, and in this state, the low tank 2 is placed on the toilet body 1 and the tank mounting bolt 3 is inserted into the through hole 1a formed through the toilet body 1. The tank mounting bolt 3 is hung down with a nut composed of an inner member 6 and an outer member 7 and fixed to the lower end side of the tank mounting bolt 3.
[0006]
FIG. 3 shows an exploded perspective view of the inner member 6 and the outer member 7 in this example, FIG. 4 shows a perspective view of the state in which the inner member is opened, and FIG. 5 shows a perspective view of the state in which the outer member is turned over. The figure is shown.
[0007]
First, the inner member 6 will be described in detail. As shown in FIG. 4, the inner member 6 has a pair of half-cylinders 61 a and 61 b having a semi-sectional shape obtained by cutting a cylindrical body in the longitudinal direction at the center portion. A half of the female screw 62a is formed in the half tube 61a on the one side, and a flange 63a is formed on the upper end side so as to protrude outward, and an engagement protrusion 64a is formed from the flange 63a. And an engaging groove 65a is formed in a recessed shape on the other side of the flange 63a.
Similarly, a flange 63b is formed on the tip of the other half-cylinder 61b so as to protrude outward. An engagement protrusion 64b is protruded on the lower surface of the flange 63b, and an engagement groove 65b is recessed. The one half cylinder 61a and the other half cylinder 61b are connected by a connecting piece 66 so that they can be bent.
[0008]
The flange 63a of the inner member 6 is formed with a locking projection 68a that protrudes so as to surround the female screw portion 62a, and the locking projection 68a can be fitted with an engaging groove into which the washer 10 can be fitted. M is formed. Similarly, a locking projection 68b is formed on the other flange 63b, and an engaging groove M is formed.
In addition, a notch 69a is formed in the outer periphery of the flange portion 63a by forming a notch in a concave shape, and a notch 69b is also formed in the other flange portion 63b.
[0009]
When such an inner member 6 is aligned with one half cylinder 61a by bending the connecting piece 66 and aligning the other half cylinder 61b with the other half cylinder 61b, as shown in FIG. The female screw 62b is in the aligned state, and at this time, the engagement protrusion 64a on one side engages in the engagement groove 65b on the other side, and the engagement protrusion 64b on the other side engages in the engagement groove 65a on one side. Are engaged.
[0010]
Further, as shown in FIG. 3, serrations 67a and 67b are formed on the outer periphery of the lower ends of the half cylinders 61a and 61b of the inner member 6 so as to protrude outward, and the serrations 67a and 67b The serrations 67a and 67b are formed by, for example, three parallel protrusions in the direction, and constitute a clutch portion.
Further, as shown in FIG. 3, bulges P and P are formed on the outer circumferences of the half cylinders 61a and 61b of the inner member 6 so as to bulge outward, and the bulges P and P are It is formed on the extension line of serrations 67a and 67b.
[0011]
In addition, it is good that the collar parts 63a and 63b spread outside by fitting the washer 10 in the engaging groove M as shown in FIG. 3 in a state where the half cylinders 61a and 61b of the inner member 6 are aligned. It is configured so that it is easy to work. Note that the outer periphery of the upper surface of the locking projections 68a and 68b is chamfered in an inclined manner so that the work of fitting the washer 10 can be easily performed.
[0012]
On the other hand, the outer member 7 is formed with an insertion hole 72 into which the inner member 6 is inserted in an aligned state on the inner side of the cylindrical main body 71, and is opposed to the inner periphery on the lower end side of the insertion hole 72. Serrations 73a and 73b are formed at the positions, and these serrations 73a and 73b are also formed in which four serration grooves are formed in parallel in the circumferential direction so as to be recessed in the vertical direction, and the opposing serrations 73a and 73b are formed. Constitutes the clutch portion of the outer member 7.
Further, on the outer side of the main body portion 71 of the outer member, there are formed hand-operated protrusions 74a and 74b in the vertical direction so as to protrude outward, and the upper end side of the main body portion 71 protrudes outward. A window portion 75 is formed in the body portion 71 below the flange portion 76 so as to face the flange portion 76.
[0013]
A pair of stopper projections 77, 77 are formed on the outer peripheral side of the flange portion 76 of the outer member 7 so as to face each other. The stopper projections 77, 77 are formed in the notches 69a, 77a of the inner member 6. 69b is formed at a position where it can engage with each of 69b.
In addition, a pair of guide portions 78, 78 are formed in an inclined shape on the inner peripheral side of the flange portion 76 of the outer member 7, and the inner periphery of the insertion hole 72 below the guide portions 78, 78 is A pair of vertical grooves 79, 79 are formed in a concave shape in the vertical direction. The upper ends of the vertical grooves 79 and 79 face the window portions 75 and 75, and projections 80 and 80 for partitioning with the vertical grooves 79 and 79 protrude upward at the lower sides of the window portions 75 and 75. Is formed.
[0014]
The inner member 6 is formed of a material in which glass fibers are mixed in a polyamide resin, and the outer member 7 is formed of a material in which glass fibers are mixed in PP resin. The material and thickness are set so as not to be damaged even if the resin deteriorates due to tightening work or the like.
[0015]
In addition, the inner member 6 is fitted to the outer member 7 in advance and shipped, and the lower ends of the half cylinders 61 a and 61 b of the inner member 6 are fitted into the insertion holes 72 of the outer member 7. However, in this case, the serrations 67a and 67b of the inner member 6 can be slid into the insertion hole 72 of the outer member 7 along the guide portions 78 and 78 of the outer member, and the serrations 67a and 67b can be easily fitted. In this state, the outer member 7 is slightly rotated so that the serrations 67a and 67b are disengaged from the vertical grooves 79 and 79 and get over the protrusions 80 and 80. In this state, the serrations 67a and 67b are prevented from moving toward the longitudinal grooves 79 and 79 by the projections 80 and 80. Material 6 rotates Rukoto is not.
[0016]
In this shipping state, the inner member 6 protrudes upward from the flange portion 76 of the outer member 7 with a long dimension, and the half cylinders 61a and 61b of the inner member 6 are in an open state. The inner member 6 can be easily fitted on the tank mounting bolt 3 from below at the site.
When the outer member 7 is turned a little while the inner member 6 is inserted into the outer periphery of the tank mounting bolt 3 at the site, the serrations 67a and 67b of the inner member 6 enter the vertical grooves 79 and 79 of the outer member 7, and this state Then, the outer member 7 is slid upward along the inner member 6 so that the inner member 6 is completely inserted into the insertion hole 72 of the outer member 7, and the flange portion 76 of the outer member 7 and the flange portion of the inner member 6 are 63a, 63b can be brought into a contact state, and in this state, the stopper projections 77, 77 of the outer member 7 are inserted into the notches 69a, 69b of the inner member 6.
[0017]
In this state, when the outer member 7 is turned and tightened while putting fingers on the hand-operated protrusions 74a and 74b of the outer member 7, the serrations 73a and 73b of the outer member 7 and the serrations 67a and 67b of the inner member 6 are engaged. Then, the inner member 6 rotates together with the outer member 7, the female screws 62 a and 62 b of the inner member 6 are screwed into the tank mounting bolt 3, and the locking protrusions 68 a and 68 b of the inner member 6 are strongly pressed against the packing 5. Will be tightened.
When the tightening force exceeds a predetermined torque, the serrations 73a and 73b of the outer member 7 ride on the serrations 67a and 67b of the inner member 6 and make a meshing state while making a ticking sound with moderation.
[0018]
In this state, the inner peripheral surface of the insertion hole 72 of the outer member 7 comes into contact with the bulging portion P of the inner member 6 and presses the half cylinders 61a and 61b of the inner member 6 inward. Since the inner diameters of the screws 62a and 62b are reduced, the degree of screwing of the tank mounting bolt 3 to the male screw 3a becomes stronger, and the female screws 62a and 62b are firmly screwed into the male screw 3a. It will be.
[0019]
When the serrations 73a and 73b of the outer member 7 are engaged with the serrations 67a and 67b of the inner member 6, when the outer member 7 is further rotated, the stopper protrusions 77 and 77 are formed on the notches 69a and 69b of the inner member 6. The inner member 6 and the outer member 7 are integrated with each other in contact with the end portion.
In addition, after a clicking sound is generated and the stopper protrusions 77 and 77 come into contact with the end portions of the notches 69a and 69b and the inner member 6 and the outer member 7 are integrated, the outer member 7 is rotated once by hand. By tightening, the low tank 2 is designed to be fixed to the toilet body 1 with an optimum torque, and watertightness is ensured.
[0020]
Accordingly, after the operator tightens the outer member 7 by hand and a clicking sound is generated, the operator only has to tighten the outer member 7 for about one rotation, and easily perform the tightening operation by hand without using a tool. Therefore, there is no need to perform a tightening operation in a narrow place with a spanner or the like as in the prior art, and there is no possibility that the pottery of the toilet body 1 is broken due to excessive tightening.
In this example, the nut structure in the case where the low tank 2 is mounted and fixed on the toilet body is illustrated, but the nut structure including the inner member 6 and the outer member 7 is also effective for fastening and fixing other members. It can be used for.
[0021]
Next, a second embodiment of the present invention will be described.
FIG. 6 is a cross-sectional configuration diagram of bolts and nuts when the low tank 2 is fixed to the upper surface of the rear part of the toilet body 1. FIG. 7 shows a fixed state after tightening. The same members as those in the first embodiment will be described with the same reference numerals.
[0022]
A tank mounting bolt 3 is suspended from above through a through hole 2a formed in the low tank 2 with a triangular packing 4 interposed therebetween, and a hexagonal nut 9 is attached to the mounting bolt 3 with a washer 8 interposed from the bottom side of the low tank 2. The tank mounting bolt 3 is fixed to the low tank 2 in advance, and in this state, the low tank 2 is placed on the toilet body 1, and the tank mounting bolt 3 is inserted into the through hole 1 a formed through the toilet body 1. It hangs down through the lower end side, and a packing 5 is interposed on the lower end side of the tank mounting bolt 3, and is fastened and fixed with a nut composed of an inner member 6 and an outer member 7.
8 is an exploded perspective view of the inner member 6 and the outer member 7, FIG. 9 is a perspective view of the inner member opened, and FIG. 10 is a perspective view of the outer member turned over. Indicates.
[0023]
First, the inner member 6 will be described. As shown in FIG. 9, the inner member 6 has a pair of half-cylinders 61a and 61b having a half cross-sectional shape obtained by cutting a cylindrical body at a central portion in the longitudinal direction. Half of the female screw 62a is formed in the half cylinder 61a, and a flange 63a is formed on the upper end side so as to protrude outward, and an engagement protrusion 64a protrudes from the flange 63a. The engaging groove 65a is formed in a concave shape on the other side of the flange portion 63a.
Similarly, a flange 63b is formed on the tip of the other half-cylinder 61b so as to protrude outward. An engagement protrusion 64b is protruded on the lower surface of the flange 63b, and an engagement groove 65b is recessed. The one half cylinder 61a and the other half cylinder 61b are connected by a connecting piece 66 so that they can be bent.
[0024]
When such an inner member 6 is aligned with one half cylinder 61a by bending the connecting piece 66 and aligning the other half cylinder 61b with the other half cylinder 61b as shown in FIG. The female screw 62b is in the aligned state, and at this time, the engagement protrusion 64a on one side engages in the engagement groove 65b on the other side, and the engagement protrusion 64b on the other side engages in the engagement groove 65a on one side. Are engaged. Further, as shown in FIG. 8, serrations 67a and 67b are formed on the outer periphery on the lower end side of the half cylinders 61a and 61b of the inner member 6, and the serrations 67a and 67b are formed on the circumference. The serrations 67a and 67b are formed by, for example, three parallel protrusions in the direction, and constitute a clutch portion.
[0025]
On the other hand, the outer member 7 is formed with an insertion hole 72 into which the inner member 6 is inserted in an aligned state on the inner side of the cylindrical main body 71, and is opposed to the inner periphery on the lower end side of the insertion hole 72. Serrations 73a and 73b are formed at the positions, and these serrations 73a and 73b are also formed in which four serration grooves are formed in parallel in the circumferential direction so as to be recessed in the vertical direction, and the opposing serrations 73a and 73b are formed. Constitutes the clutch portion of the outer member 7.
Further, on the outer side of the main body portion 71 of the outer member, there are formed hand-operated protrusions 74a and 74b in the vertical direction so as to protrude outward, and the upper end side of the main body portion 71 protrudes outward. It becomes the collar part 76, and the window part 75 is formed in the downward direction.
[0026]
In addition, the inner member 6 is fitted to the outer member 7 in advance and shipped, and in this shipping state, the inner member 6 protrudes upward from the flange portion 76 of the outer member 7 with a long dimension. Since the half cylinders 61a and 61b of the inner member 6 are in an open state, the inner member 6 can be easily fitted to the tank mounting bolt 3 from below at the site.
In this state, when the outer member 7 is inserted into the outer periphery of the inner member 6 and the outer member 7 is tightened while putting fingers on the hand-operated protrusions 74a and 74b of the outer member 7, the serration 73a of the outer member 7 is obtained. 73b and serrations 67a and 67b of the inner member 6 are engaged, the inner member 6 is rotated together with the outer member 7, and the female screws 62a and 62b of the inner member 6 are screwed to the tank mounting bolt 3 to 6, the flange portions 63a and 63b of the outer member 7 are strongly pressed and tightened against the packing 5, and the serrations 73a and 73b of the outer member 7 are engaged with the serrations 67a and 67b of the inner member 6 with a predetermined torque or more. If the serrations 73a and 73b of the outer member 7 get over the serrations 67a and 67b of the inner member 6 while emitting a certain ticking sound, the outer member 7 is idled. Upon completing the tightened state, the inner member 6 are clamped with a predetermined torque, low tank 2 at the optimum torque is designed to be fixed to the toilet body 1, and water tightness is ensured.
[0027]
【The invention's effect】
The nut structure of the present invention includes an inner member having a female screw that is screwed into a male screw of a bolt on the inside and a clutch portion formed on the outer side, and a clutch portion that can be engaged with the clutch portion of the inner member. In the nut structure composed of a hand-wound outer member that is externally inserted into the inner member, and the inner member is a pair of half-cylinders having a semi-sectional shape in which a cylindrical body is cut at a central portion in a longitudinal direction. In a state where the body is configured to be foldable with a connecting piece, the connecting piece is bent, the other half cylinder is aligned with one half cylinder, and the lower end is fitted into the outer member, When the inner member is inserted into the outer periphery of the bolt and the outer member is turned to tighten the inner member to the bolt, the clutch portion is engaged with a certain torque or more to generate a moderate sound. easily fitting the inner member to the bolt Writing it can, by turning by hand outer member, favorably can Yuku tightening the inner member to the bolt easily be assumed that it is possible to perform the fastening work by hand, also moderation in the above constant torque Since it has a structure that emits a sound with a feeling, it has the effect that it is not over-tightened and that it is not over-tightened and breaks ceramics.
[0028]
Further, the clutch portion is composed of serrations formed in a plurality of strips in the rotational direction, and is configured so that the serration of the outer member meshes with the serration of the inner member while generating a moderate sound with a certain torque or more. When the external material is rotated at a certain torque or more, the serration of the outer member meshes with the inner member's serration with a moderate click, so the installer can check the tightening state of the nut with the moderate sound. , It has the effect of not overtightening more than necessary.
[0029]
In addition, the inner member has an inner member that has a female screw that is screwed into the male screw of the bolt and has a clutch portion formed on the outer side, and a clutch portion that engages with the clutch portion of the inner member on the inner periphery. In the nut structure composed of a hand-turnable outer member that is externally inserted into the inner member, the inner member is formed by bending a pair of half-cylinders having a half cross-sectional shape obtained by cutting a cylindrical body at a central portion in a longitudinal direction with a connecting piece. The connecting piece is configured to be bent, and the connecting piece is bent to align the other half-cylinder with the other half-cylinder, and the lower end thereof is fitted into the outer member. Insert the inner member, said inner member by turning said outer member when tightening the bolt, by the outer member is released engagement of the clutch portion at above a certain torque is configured to be idle, easily The inner member can be fitted into the bolt , By turning by hand outer member, favorably can Yuku tightening the inner member to the bolt easily be assumed that it is possible to perform the fastening work by hand, also the outer member is idling in the above constant torque Since it has a clutch structure, it has the effect that it is not overtightened and that it is not overtightened and cracks ceramics.
[0030]
In addition, the clutch part is composed of serrations formed in a plurality of strips in the rotational direction, and the serration of the outer member overcomes the serration of the inner member while generating a modest sound at a certain torque or more. When the external material is rotated at a certain torque or more, the serration of the outer member overcomes the serration of the inner member while producing a moderate clicking sound, so the installer confirms the tightening condition of the nut with this moderate sound. This has the effect of preventing excessive tightening beyond necessity.
[Brief description of the drawings]
FIG. 1 is an enlarged cross-sectional view of a state in which an inner member and an outer member constituting a nut are fitted to the lower end of a bolt when a low tank is attached to a toilet body.
FIG. 2 is a cross-sectional configuration diagram corresponding to FIG. 1 showing a state after completion of tightening.
FIG. 3 is an exploded perspective view of an inner member and an outer member that constitute a nut.
FIG. 4 is a perspective configuration diagram in a state where an inner member is opened.
FIG. 5 is a perspective configuration diagram in which an external member is turned upside down.
FIG. 6 is an enlarged sectional view showing a second embodiment in a state in which an inner member and an outer member constituting a nut are fitted to the lower end of the bolt.
FIG. 7 is a cross-sectional configuration diagram corresponding to FIG. 6 showing a state after completion of tightening.
FIG. 8 is an exploded perspective view of an inner member and an outer member constituting the nut.
FIG. 9 is a perspective configuration diagram in a state where an inner member is opened.
FIG. 10 is a perspective configuration diagram in which an external member is turned upside down.
FIG. 11 is a perspective configuration diagram of a state in which a low tank is attached to the rear upper surface of the toilet body.
FIG. 12 is an enlarged cross-sectional view showing a conventional fastening structure with a hexagon nut.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Toilet body 1a Through-hole 2 Low tank 2a Through-hole 3 Tank mounting bolt 4 Triangular packing 5 Packing 6 Inner member 7 External material 9 Hexagon nut 10 Washer 61a, 61b Half cylinder body 62a, 62b Female screw 63a, 63b Eight part 64a, 64b Engagement protrusion 65a, 65b Engagement groove 66 Connection piece 67a, 67b Serration (clutch part)
68a, 68b Locking projection 69a, 69b Notch

Claims

An inner member having a female screw that is screwed into a male screw of the bolt and having a clutch portion formed on the outer side, and a clutch portion that can be engaged with the clutch portion of the inner member are provided on the inner periphery. In the nut structure constituted by the outer member that can be rotated by the inner member ,
The inner member is formed by connecting a pair of half-cylinders having a semi-sectional shape obtained by cutting a cylindrical body at a central portion in a longitudinal direction so as to be bendable by a connecting piece,
The inner member is inserted into the outer periphery of the bolt in a state where the connecting piece is bent to align the other half cylinder with the other half cylinder and the lower end thereof is fitted into the outer member. A nut structure characterized in that when the inner member is fastened to the bolt by turning the clutch, the clutch portion is engaged with a certain torque or more to generate a moderate sound.

The clutch portion is composed of serrations formed in a plurality of strips in the rotational direction, and is configured so that the serration of the outer member meshes with the serration of the inner member while generating a moderate sound at a certain torque or more. The nut structure according to claim 1.

An inner member having a female screw that is screwed into a male screw of the bolt on the inside and a clutch portion formed on the outer side, and a clutch portion that engages with the clutch portion of the inner member on the inner periphery. In the nut structure composed of hand-turnable outer members that are extrapolated to the material ,
The inner member is formed by connecting a pair of half-cylinders having a semi-sectional shape obtained by cutting a cylindrical body at a central portion in a longitudinal direction so as to be bendable by a connecting piece,
The inner member is inserted into the outer periphery of the bolt in a state where the connecting piece is bent to align the other half cylinder with the other half cylinder and the lower end thereof is fitted into the outer member. A nut structure characterized in that when the inner member is fastened to the bolt by turning, the engagement of the clutch portion is released at a predetermined torque or more and the outer member is idled.

The clutch portion is composed of serrations formed in a plurality of strips in the rotational direction, and the serrations of the outer member overcome the serrations of the inner member while generating a moderate sound when the torque exceeds the predetermined torque. The nut structure according to claim 3.