JP3944758B2

JP3944758B2 - Simple fastening device

Info

Publication number: JP3944758B2
Application number: JP30984297A
Authority: JP
Inventors: 村吉治北
Original assignee: NHK Spring Co Ltd
Current assignee: NHK Spring Co Ltd
Priority date: 1997-10-24
Filing date: 1997-10-24
Publication date: 2007-07-18
Anticipated expiration: 2017-10-24
Also published as: JPH11125228A

Description

【０００１】
【発明の属する技術分野】
この発明は、締め付けおよび取り外しの容易な作業性を向上させた簡易締結装置に関する。
【０００２】
【従来の技術】
従来、例えば建築現場や製品の組立現場で使用されている簡易締結装置（以下、ナットという）は、雄ネジへの挿入、雄ネジを介しての部材の締め付け、雄ネジからの取り外しの際に回転させる操作が必要であった。特に高い場所や狭い場所でナットを回転させてナットの締め付け、取り外しを行う作業は容易でない。
このため、作業性を向上させたワンタッチで雄ネジへの挿入、雄ネジを介して部材の締め付けの可能なナットとして、実公昭５５−４８１７１号公報に開示されているものが知られているが、ナットの取り外しに際しては回転させる操作が必要である。
さらにワンタッチで雄ネジへの挿入、雄ネジを介しての部材の締め付け、雄ネジからの取り外しの可能なナットとしては、特公昭５５−５０２０３号公報に開示されているものが知られているが、雄ネジへの挿入、雄ネジからの取り外しのたびに操作環を回転させる操作が必要である。
【０００３】
【発明が解決しようとする課題】
従来の簡易締結装置は以上のように構成されていたので、実公昭５５−４８１７１号公報に開示されている技術では、ナットの取り外しに際してのナットの回転操作に改良の余地があり、ナットの取り外しの際の作業性の向上が図られていない課題があった。
【０００４】
また、特公昭５５−５０２０３号公報に開示されている技術では、雄ネジへの挿入、雄ネジからの取り外しのたびに操作環を操作する手間が必要であり、さらに構造も複雑でコスト高となる課題があった。
【０００５】
本発明は上記事情に鑑みてなされたものであり、雄ネジへの挿入、雄ネジを介しての部材の締め付け、雄ネジからの取り外しの際の作業性を向上させ、さらに簡単な構造によりコストの上昇も抑制できる簡易締結装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明に係る簡易締結装置は、雌ネジが形成された複数のネジ駒と、該複数のネジ駒を前記雌ネジの縮径方向に付勢するとともに一体化するネジ駒一体化手段と、該ネジ駒一体化手段により一体化された前記複数の各ネジ駒を拡径方向と平行な方向に移動可能に収納し、前記ネジ駒の雌ネジと螺合する雄ネジが挿通される雄ネジ挿通孔が形成された雌ネジケースと、前記ネジ駒と係合可能となっており、当該係合によりネジ駒の拡径方向への移動を拘束する拘束部材とを備えていることを特徴とする。
【０００７】
また、本発明に係る簡易締結装置は、前記各ネジ駒に係合し、前記一体化されたネジ駒のネジ穴の位置を前記雄ネジ挿通孔の位置に合わせる位置決め手段をさらに備えていることを特徴とする。
【０００８】
また、本発明に係る簡易締結装置は、前記拘束部材はネジ駒と係合可能となるように前記雌ネジケースに取り付けられていることを特徴とする。
【０００９】
また、本発明に係る簡易締結装置は、前記各ネジ駒に円錐状の凸部が形成されており、前記拘束部材は、前記凸部に対応した円錐状の凹部が形成され、この凹部が前記雄ネジの挿入に伴って前記凸部と嵌合してネジ駒の拡径方向への移動を拘束するように前記雌ネジケース内に移動可能に設けられた固定駒からなることを特徴とする。
【００１０】
また、本発明に係る簡易締結装置は、前記各ネジ駒に円錐状の凸部が形成されており、前記拘束部材は、前記凸部に対応した円錐状の凹部が形成され、この凹部が前記雄ネジの挿入に伴って前記凸部と嵌合してネジ駒の拡径方向への移動を拘束するように前記雌ネジケースに嵌合されるカバー体からなることを特徴とする。
【００１１】
また、本発明に係る簡易締結装置は、前記ネジ駒一体化手段は、複数の各ネジ駒の外周部に、各ネジ駒に渡って連続して形成された溝と、各ネジ駒の前記溝に掛け回された弾性体により構成されたリングとを備えていることを特徴とする。
【００１２】
また、本発明に係る簡易締結装置は、前記ネジ駒一体化手段は、複数の各ネジ駒の外周面に形成され、前記各ネジ駒を収納した雌ネジケースの内周面に先端部が当接した弾性を有した弾性舌状部材により、前記複数のネジ駒を雌ネジの縮径方向に付勢するとともに一体化することを特徴とする。
【００１３】
また、本発明に係る簡易締結装置は、前記ネジ駒一体化手段は、雌ネジケースの内側周面に形成され、雌ネジケースに収納された複数の各ネジ駒の外周面に先端部が当接した弾性を有した弾性舌状部材により、前記複数のネジ駒を雌ネジの縮径方向に付勢するとともに一体化することを特徴とする。
【００１５】
【発明の実施の形態】
以下、本発明の一実施の形態例を図について説明する。
図１は、第１の実施の形態による簡易締結装置の構成を示す構造図であり、同図（ａ）は簡易締結装置の平面図、同図（ｂ）は正面図、同図（ｃ）は底面図、同図（ｆ）は同図（ａ）のＡ−Ａ断面構造を示す断面図、同図（ｅ）はネジ駒保持部材の断面図である。これらの図において、１はナットケース、２および３は半円環形状を有したネジ駒、５はカバー体である。
【００１６】
図２は、ナットケース１の構成を示す構造図であり、同図（ａ）はナットケースの平面図、同図（ｂ）は正面図、同図（ｃ）は底面図、同図（ｄ）は同図（ａ）におけるＡ−Ａ断面構造を示す断面図である。これらの図において、１ａはネジ駒２，３を拡径方向に移動可能に収納する有底長穴、１ｂは雄ネジが挿通される雄ネジ挿通孔、１ｃはネジ駒２，３が一体化されて構成される雌ネジ体の雌ネジのネジ穴の位置を、ナットケース１に形成された前記雄ネジ挿通孔１ｂの位置に位置決めするための前記有底長穴１ａの底部に構成された位置決め凸部、１ｄはカバー体をナットケース１と嵌合させ一体化させるための係止凹部である。
【００１７】
図３は、ネジ駒２，３の構成を示す構造図であり、同図（ａ）は雌ネジが形成された雌ネジ体を構成する２つのネジ駒の内の一方のネジ駒を示す平面図、同図（ｂ）は正面図、同図（ｃ）は底面図である。また、図３の（ｄ）は前記２つのネジ駒により構成された雌ネジ体を示す平面図、同図（ｅ）は正面図、同図（ｆ）は底面図である。これらの図において、２ｂはネジ駒２に形成された雌ネジ、３ｂはネジ駒３に形成された雌ネジであり、ネジ駒２の雌ネジ２ｂとネジ駒３の雌ネジ３ｂは組になって１つのナットに構成され、ネジ駒２の雌ネジ２ｂとネジ駒３の雌ネジ３ｂとのピッチの位相差は半ピッチになっている。２ｃはネジ駒２の一方の端部に構成された小径部、２ｄはネジ駒２の他方の端部に構成された大径部、３ｃはネジ駒３の一方の端部に構成された小径部、３ｄはネジ駒３の他方の端部に構成された大径部である。
【００１８】
２ｅはネジ駒２の他方の端部に構成された大径部２ｄの外周面に形成された溝、３ｅはネジ駒３の他方の端部に構成された大径部３ｄの外周面に形成された溝であり、これら溝２ｅ，３ｅには図１の（ｄ）に示すように弾性を有した例えばＯリング４が装着され、このＯリング４によりネジ駒２およびネジ駒３は拡径方向に移動可能に常に一体化されている。なお、このＯリングの代りに弾性を有したＣリングを用いることも可能である。２ａはネジ駒２の他方の端部に構成された大径部２ｄに形成された切欠部、３ａはネジ駒３の他方の端部に構成された大径部３ｄに形成された切欠部であり、これら切欠部２ａ，３ａは、図２に示した位置決め凸部１ｃに嵌合し、ネジ駒２，３が一体化されて構成される雌ネジ体の雌ネジのネジ穴の位置を、ナットケース１に形成された前記雄ネジ挿通孔１ｂの位置に位置決めする。
【００１９】
図４は、前記ナットケース１にネジ駒２，３を収納するためのカバー体５の構成を示す構造図であり、同図（ａ）はカバー体の平面図、同図（ｂ）は正面図、同図（ｃ）は底面図、同図（ｄ）は同図（ａ）のＡ−Ａ断面構造を示す断面図である。これらの図において、５ａはカバー体５をナットケース１に嵌合させ、ナットケース１と一体化するための係止凸部であり、ナットケース１の係止凹部１ｄと嵌合する。５ｂはネジ駒２，３の小径部２ｃ，３ｃが突出し、ネジ駒２，３を拡径方向に移動可能にする透孔である。
Ｏリング４により一体化されているネジ駒２，３は、ナットケース１の有底長穴１ａに収納されている状態で、ナットケース１へ係止凸部５ａにより嵌合したカバー体５によりナットケース１からの抜け落ちが防止される。
【００２０】
また、図１（ｅ）に示す符号６はネジ駒保持部材であり、ネジ駒２，３の小径部２ｃ，３ｃの外径よりわずかに大きな内径のネジ駒保持穴６ａが形成されている。なお、このネジ駒保持部材６は、被締結部材でもよく、その場合は被締結部材にネジ駒保持穴６ａが形成されることになる。
【００２１】
次に動作について説明する。
図５は、この簡易締結装置の各部の動作を示す動作説明図であり、同図（ａ）に示すように雄ネジであるボルト５１に対しこの簡易締結装置をＡ方向へ挿入すると、同図（ｂ）に示すごとく、Ｏリング４の付勢力に抗してネジ駒２およびネジ駒３が拡径方向に移動する。実際には、ボルト５１のネジ山をネジ駒２、ネジ駒３の雌ネジのネジ山が乗り越えるたびに、ネジ駒２およびネジ駒３が図５（ｂ）に（イ）で示す拡径方向と、（ロ）で示す縮径方向への移動を繰り返す。このため、雄ネジ挿通孔１ｂからボルト５１を押し込むことで、回転させることなく自由にボルト５１の所望の位置へこの簡易締結装置を配置することが出来る。この状態では、ネジ駒２およびネジ駒３の雌ネジがＯリング４によりボルト５１に圧接して、ボルト５１に対し簡易締結装置はずり落ちることなく所望の位置に配置された状態を維持している。
そして、この簡易締結装置を配置した後、図５の（ｃ）に示すようにネジ駒保持部材６のネジ駒保持穴６ａをネジ駒２，３の小径部２ｃ，３ｃに嵌合させることによりネジ駒２，３の拡径方向の移動は阻止され、一つのナットとして機能し、ネジ駒保持部材６または図５の（ｄ）に示すように被締結部材にネジ駒保持穴６ａが形成されているときには当該被締結部材を支えたり、締め付けたりすることが出来る。
【００２２】
以上のように、この第１の実施の形態によれば、ネジ駒保持部材６のネジ駒保持穴６ａをネジ駒２，３の小径部２ｃ，３ｃに嵌合させないかぎり、ボルト５１を所望の位置へ回転させることなく自由に移動可能であるため、ボルト５１への挿入、ボルト５１を介しての部材の締め付け、ボルト５１からの取り外しの際の作業性が向上し、さらにナットケース１、ネジ駒２，３、Ｏリング４、カバー体５および必要に応じてネジ駒保持部材６など合計６点程度の部品点数から構成されている簡単な構造であることからコストの上昇も抑制できる効果がある。
【００２３】
次に、本発明の第２の実施の形態を図について説明する。
図６は、第２の実施の形態による簡易締結装置の構成および各部の動作を示す構造図であり、本簡易締結装置のネジ駒保持部材６のネジ駒保持穴６ａの内周面はテーパが付されたテーパ面として構成されている。また、ネジ駒保持穴６ａと嵌合するネジ駒２，３の小径部２ｃ，３ｃの外周面も、前記ネジ駒保持穴６ａのテーパ面と合致するテーパが付されたテーパ面として構成されている。
本実施の形態の簡易締結装置では、前記第１の実施の形態の効果が得られるだけでなく、図６の（ｂ）に示すようにネジ駒２，３の小径部２ｃ，３ｃへのネジ駒保持部材６の嵌合が容易になると共に、同図（ｃ）に示すようにテーパの効果によりネジ駒２，３の雌ネジ２ｂ，３ｂがボルト５１へ強く押さえつけられることとなり、ネジ駒保持部材６または被締結部材にネジ駒保持穴６ａが形成されているときには当該被締結部材をより強固に締め付けることが出来、さらにネジの弛み止めの効果も期待できる。
【００２４】
次に、本発明の第３の実施の形態を図について説明する。
図７（ａ）は、第３の実施の形態による簡易締結装置の構成を示す構造図であり、図において２ｇはネジ駒２の大径部２ｄの外側周面に形成された弾性を有した弾性舌部、３ｇはネジ駒３の大径部３ｄの外側周面に形成された弾性を有した弾性舌部である。これら弾性舌部２ｇ，３ｇの先端部は、ナットケース１の有底長穴１ａの内側周面に当接しており、ネジ駒２，３をその雌ネジの縮径方向に付勢するとともに一体化している。
【００２５】
なお、図７の（ｂ）に示すように、弾性舌部１ｅ，１ｆをナットケース１の有底長穴１ａの内側周面に構成するようにしてもよい。この場合、弾性舌部１ｅ，１ｆの先端部は、ネジ駒２，３の大径部の外側周面へ当接し、ネジ駒２，３をその雌ネジの縮径方向に付勢するとともに一体化する。
【００２６】
本実施の形態の簡易締結装置では、前記第１の実施の形態の効果が得られるだけでなく、Ｏリングなどを用いることなくネジ駒２，３をその雌ネジの縮径方向に付勢するとともに一体化することが出来るため、備品点数もさらに少なくなり、また組み立ても容易になる効果がある。
【００２７】
次に、本発明の第４の実施の形態を図について説明する。
図８は、第４の実施の形態による簡易締結装置の構成を示す構造図である。この簡易締結装置では、ネジ駒保持部材６のネジ駒保持穴６ａに嵌合凹部６ｂを構成し、またネジ駒２，３の小径部２ｃ，３ｃに嵌合凸部２ｆ，３ｆを構成する。
そして、図８の（ａ）に示すようにネジ駒保持穴６ａをネジ駒２，３の小径部２ｃ，３ｃに対し図中（ハ）の方向に押し込むことにより、嵌合凹部６ｂへ嵌合凸部２ｆ，３ｆが嵌合されて一つのナットとして機能する。同図（ｂ）はこの状態を示している。
【００２８】
本実施の形態の簡易締結装置では、ネジ駒保持部材６のネジ駒保持穴６ａに構成された嵌合凹部６ｂへネジ駒２，３の小径部２ｃ，３ｃに構成された嵌合凸部２ｆ，３ｆが嵌合された状態では、ネジ駒保持部材６はネジ駒２，３の小径部２ｃ，３ｃからは容易に外れなくなるため、被締結部材の形状、状態にかかわらず確実に一つのナットとして機能する状態を維持することが可能になる効果がある。
【００２９】
次に、第５の実施の形態を図について説明する。
図９は、第５の実施の形態による簡易締結装置の構成を示す構造図である。この簡易締結装置では、前記第４の実施の形態における嵌合凹部６ｂ、嵌合凸部２ｆ，３ｆを構成するとともに、ネジ駒保持部材６に仮保持用の突起６ｄを構成し、さらにカバー体５の端部へ前記突起６ｄと係合する係止部５ｂを構成し、ネジ駒保持部材６がカバー体５、ナットケース１の側面に沿って移動可能に構成する。そして、ネジ駒保持部材６が係止部５ｂによりカバー体５へ係止された状態で、ネジ駒保持部材６をカバー体５へ仮保持できるようにする。なお、この状態では図９の（ａ）に示すようにネジ駒２，３は拡径方向へ移動可能である。
【００３０】
本実施の形態の簡易締結装置では、ネジ駒保持部材６は簡易締結装置本体へ仮保持されているので、ネジ駒保持部材６と簡易締結装置本体とを一体物として扱うことが出来、ネジ駒保持部材６の紛失を防止でき、携帯も容易になり、作業性を向上できる効果がある。
【００３１】
次に、第６の実施の形態を図について説明する。
図１３は、第６の実施の形態による簡易締結装置の構成および各部の動作を示す構造図である。この簡易締結装置では、ナットケース１内に、弾性体７を介してネジ駒２，３を押す固定駒８が設けられている。ネジ駒２，３には円錐形状の凸部２ｒ，３ｒが構成され、また固定駒８には前記ネジ駒２，３に構成された円錐形状の凸部２ｒ，３ｒと合致する円錐形状の凹部８ａが構成されている。
【００３２】
本簡易締結装置では、簡易締結装置本体をＡ方向へ移動させ、ボルト５１が簡易締結装置本体に押し込まれると、Ｏリング４の付勢力に抗してネジ駒２，３が拡径方向に移動する。実際にはボルト５１のネジ山をネジ駒２，３のネジ山が越えるたびに、ネジ駒２，３は図１３の（ｂ）に（イ）で示す拡径方向および（ロ）で示す縮径方向の移動を繰り返すので、押し込むだけでよく簡易締結装置本体を回す必要はない。簡易締結装置本体をＡ方向へと押し込んでいくと、相手部材６１に固定駒８の下端が当接し、固定駒８が上方へ移動し、ネジ駒２，３の円錐形状の凸部２ｒ，３ｒが固定駒８の円錐形状の凹部８ａと嵌合する。その後、固定駒８の円錐形状の凹部８ａによりネジ駒２，３の拡径方向の移動は阻止され、１つのナットとして機能し、相手部材を支持したり締め付けることが出来る。また、円錐形状の凸部２ｒ，３ｒが固定駒８の円錐形状の凹部８ａと嵌合するため、弛み止めの効果もある。
【００３３】
次に、第７の実施の形態を図について説明する。
図１４は、第７の実施の形態による簡易締結装置の構成および各部の動作を示す構造図である。この簡易締結装置では、ナットケース１内に、円錐形状の凹部５ｒが構成されたカバー体５によリ、弾性体７を介してネジ駒２，３が収納されている。ネジ駒２，３には、カバー体５の円錐形状の凹部５ｒと嵌合する円錐形状の凸部２ｒ，３ｒが構成されている。
【００３４】
本簡易締結装置では、簡易締結装置本体を図１４（ａ）のＡ方向へ移動させ、ボルト５１が簡易締結装置本体に押し込まれると、Ｏリング４の付勢力に抗してネジ駒２，３が拡径方向に移動する。実際にはボルト５１のネジ山をネジ駒２，３のネジ山が越えるたびに、ネジ駒２，３は図１４の（ｂ）に（イ）で示す拡径方向および（ロ）で示す縮径方向の移動を繰り返すので、押し込むだけでボルト５１へ簡易締結装置本体を装着でき回す必要はない。簡易締結装置本体を図１４に示すＡ方向へ押し込んでいくと、相手部材６１にネジ駒２，３の下端が当接し、ネジ駒２，３が上方へ移動し、ネジ駒２，３の円錐形状の凸部２ｒ，３ｒ、カバー体５の円錐形状の凹部５ｒと嵌合する。その後、カバー体５の円錐形状の凹部５ｒによりネジ駒２，３の拡径方向の移動は阻止されて１つのナットとして機能し、相手部材６１を支持したり、締め付けることが出来る。本例においても弛み止めの効果がある。
【００３５】
図１０、図１１、図１２は、以上説明した各実施の形態の簡易締結装置の用途例を示す説明図である。
蛍光灯を取り付けるには、従来、図１０に示すように天井裏（階上の床）に固定されているボルト５１に、蛍光灯のフレーム５０の穴を通し、その後、ナット５２を用いて蛍光灯を固定する作業手順になる。この場合、ナット５２を回す作業が面倒であり、さらに高所作業であることから安全面での問題もある。
このような作業において以上説明した各実施の形態の簡易締結装置を用いる場合には、前記蛍光灯のフレーム５０の穴をネジ駒保持穴とすることにより、ボルト５１に前記ネジ駒保持穴である前記蛍光灯のフレーム５０の穴を通し、簡易締結装置本体のネジ駒２，３の小径部２ｃ，３ｃに前記蛍光灯のフレーム５０の穴を嵌合させるだけで蛍光灯の取り付けは完了する。なお、この状態で蛍光灯の高さの微調整を行うときには、簡易締結装置本体を回すことにより行う。
【００３６】
また、天井を取り付けるには、従来、図１１に示すように前段階として天井裏（階上の床）に固定されているボルト５１に天井を支えるハンガー５３を取り付けるが、前記蛍光灯と同様にボルト５１へ前記ハンガー５３の固定用穴を通しナット５２で固定しており、ナット５２を回すという作葉が面倒であり、さらに高所作業であることから安全面での問題もある。
このような作業において以上説明した各実施の形態の簡易締結装置を用いる場合には、前記ハンガー５３の固定用穴をネジ駒保持穴とすることにより、ボルト５１に前記ハンガー５３の固定用穴を通した後、簡易締結装置本体をボルト５１へ通し、ネジ駒２，３の小径部２ｃ，３ｃにハンガー５３の固定用穴を嵌合させるだけで、ハンガー５３の取り付けは完了する。なお、ハンガー５３の高さの微詔整は、簡易締結装置本体を回すことにより行う。
【００３７】
また、排水管の配管工事は、図１２に示すように床から直立しているボルト５１に、排水管５４を支持するバンド５５とナット５２を使用して取り付けるが、排水管５４の勾配を考慮しながらの取り付けとなるので、ナット５２を回して高さ調整しなければならず、極めて面倒な作業である。
このような作業において以上説明した各実施の形態の簡易締結装置を用いる場合には、バンド５５の固定用穴をネジ駒保持穴とすることにより、簡易締結装置本体をボルト５２へ通し、高さを概略調整した後、バンド５５の固定用穴をボルト５２へ通し簡易締結装置本体のネジ駒２，３の小径部２ｃ，３ｃにバンド５５の固定用穴を嵌合させるだけで、バンド５５の取り付けは完了する。なお排水管５４の勾配の微調整は簡易締結装置本体を回すことにより行うことが出来る。
なお、上記した用途の他にも、天井裏の電気配線の支持、ダクトの取り付け等その用途は広い。
【００３８】
【発明の効果】
以上のように、本発明によれば、雌ネジが形成された複数のネジ駒と、該複数のネジ駒を前記雌ネジの縮径方向に付勢するとともに一体化するネジ駒一体化手段と、該ネジ駒一体化手段により一体化された前記複数の各ネジ駒を拡径方向と平行な方向に移動可能に収納し、前記ネジ駒の雌ネジと螺合する雄ネジが挿通される雄ネジ挿通孔が形成された雌ネジケースと、前記ネジ駒と係合可能に前記雌ねじケースに取り付けられ、前記係合によりネジ駒の拡径方向への移動を拘束する拘束部材とを備えているので、雄ネジを雄ネジ挿通孔へ押し込むと前記複数の各ネジ駒は雌ネジの径方向に移動して前記雄ネジの所望の位置への自由な移動が可能になり、またネジ駒の拡径方向への移動を拘束する拘束部材を備えていることから、各ネジ駒の拡径方向の移動が拘束されて前記各ネジ駒は１つの雌ネジ体として機能するため、雄ネジへの挿入、雄ネジを介しての部材の締め付け、雄ネジからの取り外しの際の作業性が向上し、さらに簡単な構造によりコストの上昇も抑制できる効果がある。
【図面の簡単な説明】
【図１】この発明の第１の実施の形態による簡易締結装置の構成を示す構造図である。
【図２】この発明の第１の実施の形態による簡易締結装置のナットケースの構成を示す構造図である。
【図３】この発明の第１の実施の形態による簡易締結装置のネジ駒の構成を示す構造図である。
【図４】この発明の第１の実施の形態による簡易締結装置のナットケースにネジ駒を収納するためのカバー体の構成を示す構造図である。
【図５】この発明の第１の実施の形態による簡易締結装置の各部の動作を示す動作説明図である。
【図６】この発明の第２の実施の形態による簡易締結装置の構成および各部の動作を示す構造図である。
【図７】この発明の第３の実施の形態による簡易締結装置の構成を示す構造図である。
【図８】この発明の第４の実施の形態による簡易締結装置の構成を示す構造図である。
【図９】この発明の第５の実施の形態による簡易締結装置の構成を示す構造図である。
【図１０】この発明の実施の形態例による簡易締結装置の用途例を示す説明図である。
【図１１】この発明の実施の形態例による簡易締結装置の用途例を示す説明図である。
【図１２】この発明の実施の形態例による簡易締結装置の用途例を示す説明図である。
【図１３】この発明の第６の実施の形態による簡易締結装置の構成および各部の動作を示す構造図である。
【図１４】この発明の第７の実施の形態による簡易締結装置の構成および各部の動作を示す構造図である。
【符号の説明】
１ナットケース（雌ネジケース）
１ｂ雄ネジ挿通孔
１ｆ，１ｅ弾性舌状部材
２，３ネジ駒
２ｃ，３ｃ小径部（突出部）
２ｅ，３ｅ溝（ネジ駒一体化手段）
２ｇ，３ｇ弾性舌状部材
２ｆ，３ｆ嵌合凸部（突出部側係止部）
４Ｏリング（ネジ駒一体化手段）
５カバー体（雌ネジケース）
６ネジ駒保持部材（拘束部材）
６ｂ嵌合凹部（拘束部材側係止部）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a simple fastening device with improved workability that is easy to tighten and remove.
[0002]
[Prior art]
Conventionally, for example, a simple fastening device (hereinafter referred to as a nut) used at a construction site or a product assembly site is used for insertion into a male screw, fastening of a member via a male screw, and removal from a male screw. Operation to rotate was necessary. Particularly, it is not easy to tighten and remove the nut by rotating the nut in a high place or a narrow place.
For this reason, what is disclosed in Japanese Utility Model Publication No. 55-48171 is known as a nut that can be inserted into a male screw with one touch and the member can be tightened via the male screw with improved workability. When removing the nut, it is necessary to rotate it.
Further, as nuts that can be inserted into a male screw with one touch, tightened with a member via a male screw, and removed from the male screw, those disclosed in Japanese Patent Publication No. 55-50203 are known. It is necessary to rotate the operation ring every time it is inserted into and removed from the male screw.
[0003]
[Problems to be solved by the invention]
Since the conventional simple fastening device is configured as described above, in the technique disclosed in Japanese Utility Model Publication No. 55-48171, there is room for improvement in the rotation operation of the nut when removing the nut. There was a problem that workability was not improved.
[0004]
In the technique disclosed in Japanese Patent Publication No. 55-50203, it is necessary to operate the operating ring every time the male screw is inserted into and removed from the male screw, and the structure is complicated and the cost is high. There was a problem.
[0005]
The present invention has been made in view of the above circumstances, and improves the workability at the time of insertion into a male screw, tightening of a member via the male screw, and removal from the male screw. An object of the present invention is to provide a simple fastening device that can suppress the rise of the rotation.
[0006]
[Means for Solving the Problems]
A simple fastening device according to the present invention includes a plurality of screw pieces formed with female screws, screw piece integration means for urging and integrating the plurality of screw pieces in the direction of diameter reduction of the female screw, A male screw insertion hole through which a plurality of screw pieces integrated by the screw piece integration means are accommodated so as to be movable in a direction parallel to the diameter expansion direction, and a male screw screwed with a female screw of the screw piece is inserted. And a constraining member that can be engaged with the screw piece and restricts the movement of the screw piece in the diameter-expanding direction by the engagement .
[0007]
In addition, the simple fastening device according to the present invention further includes positioning means that engages with each of the screw pieces and adjusts the position of the screw hole of the integrated screw piece to the position of the male screw insertion hole. Features.
[0008]
The simple fastening device according to the present invention is characterized in that the restraining member is attached to the female screw case so as to be engageable with a screw piece.
[0009]
Further, in the simple fastening device according to the present invention, a conical convex portion is formed on each screw piece, and the constraining member has a conical concave portion corresponding to the convex portion, and the concave portion is It is characterized by comprising a fixed piece movably provided in the female screw case so as to be engaged with the convex portion with the insertion of the male screw and restrain the movement of the screw piece in the diameter increasing direction.
[0010]
Further, in the simple fastening device according to the present invention, a conical convex portion is formed on each screw piece, and the constraining member has a conical concave portion corresponding to the convex portion, and the concave portion is It is characterized by comprising a cover body fitted to the female screw case so as to be fitted to the convex portion with insertion of the male screw and to restrain the movement of the screw piece in the diameter increasing direction.
[0011]
Further, in the simple fastening device according to the present invention, the screw piece integration means is hung on the outer peripheral portion of each of the plurality of screw pieces and continuously formed over the screw pieces, and the groove of each screw piece. And a ring formed of a rotated elastic body .
[0012]
Further, in the simple fastening device according to the present invention, the screw piece integration means is formed on the outer peripheral surface of each of the plurality of screw pieces, and the tip end abuts on the inner peripheral surface of the female screw case storing the respective screw pieces. The plurality of screw pieces are biased in the direction of diameter reduction of the female screw and integrated by an elastic tongue-like member having elasticity.
[0013]
Further, in the simple fastening device according to the present invention, the screw piece integration means is formed on an inner peripheral surface of the female screw case, and an elastic portion in which a tip portion is in contact with an outer peripheral surface of each of the plurality of screw pieces accommodated in the female screw case. The plurality of screw pieces are urged in the direction of diameter reduction of the female screw and integrated by an elastic tongue-like member having
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a structural diagram showing the configuration of a simple fastening device according to a first embodiment, where FIG. 1 (a) is a plan view of the simple fastening device, FIG. 1 (b) is a front view, and FIG. Is a bottom view, FIG. 8F is a sectional view showing the AA sectional structure of FIG. 9A, and FIG. 8E is a sectional view of the screw piece holding member. In these drawings, 1 is a nut case, 2 and 3 are screw pieces having a semi-annular shape, and 5 is a cover body.
[0016]
2A and 2B are structural views showing the configuration of the nut case 1. FIG. 2A is a plan view of the nut case, FIG. 2B is a front view, FIG. 2C is a bottom view, and FIG. ) Is a cross-sectional view showing an AA cross-sectional structure in FIG. In these drawings, reference numeral 1a denotes a bottomed long hole for accommodating the screw pieces 2 and 3 so as to be movable in the diameter increasing direction, 1b denotes a male screw insertion hole through which the male screw is inserted, and 1c denotes an integration of the screw pieces 2 and 3. The bottom of the bottomed long hole 1a for positioning the female screw hole of the female screw body configured at the position of the male screw insertion hole 1b formed in the nut case 1 is configured. The positioning convex portion 1d is a locking concave portion for fitting the cover body with the nut case 1 and integrating them.
[0017]
FIG. 3 is a structural diagram showing the configuration of the screw pieces 2 and 3, and FIG. 3A is a plan view showing one of the two screw pieces constituting the female screw body in which the female screw is formed. (B) is a front view, and (c) is a bottom view. 3D is a plan view showing the female screw body constituted by the two screw pieces, FIG. 3E is a front view, and FIG. 3F is a bottom view. In these drawings, 2b is a female screw formed on the screw piece 2, 3b is a female screw formed on the screw piece 3, and the female screw 2b of the screw piece 2 and the female screw 3b of the screw piece 3 form a pair. The pitch difference between the female screw 2b of the screw piece 2 and the female screw 3b of the screw piece 3 is a half pitch. 2c is a small diameter portion configured at one end of the screw piece 2, 2d is a large diameter portion configured at the other end of the screw piece 2, and 3c is a small diameter configured at one end of the screw piece 3. The part 3d is a large diameter part formed at the other end of the screw piece 3.
[0018]
2e is a groove formed on the outer peripheral surface of the large diameter portion 2d formed at the other end of the screw piece 2, and 3e is formed on the outer peripheral surface of the large diameter portion 3d formed at the other end of the screw piece 3. As shown in FIG. 1D, for example, an O-ring 4 having elasticity is attached to the grooves 2e and 3e, and the screw piece 2 and the screw piece 3 are expanded in diameter by the O-ring 4. It is always integrated so that it can move in the direction. It is also possible to use a C-ring having elasticity instead of this O-ring. 2a is a notch formed in the large-diameter portion 2d formed on the other end of the screw piece 2, and 3a is a notch formed in the large-diameter portion 3d formed on the other end of the screw piece 3. Yes, these notches 2a and 3a are fitted into the positioning projections 1c shown in FIG. 2, and the positions of the screw holes of the female screw of the female screw body formed by integrating the screw pieces 2 and 3 are It is positioned at the position of the male screw insertion hole 1 b formed in the nut case 1.
[0019]
4A and 4B are structural views showing the structure of the cover body 5 for housing the screw pieces 2 and 3 in the nut case 1, wherein FIG. 4A is a plan view of the cover body, and FIG. FIG. 4C is a bottom view, and FIG. 4D is a cross-sectional view showing the AA cross-sectional structure of FIG. In these drawings, reference numeral 5 a denotes a locking projection for fitting the cover body 5 to the nut case 1 and integrating it with the nut case 1, and is fitted to the locking recess 1 d of the nut case 1. Reference numeral 5b denotes a through hole through which the small diameter portions 2c and 3c of the screw pieces 2 and 3 protrude to enable the screw pieces 2 and 3 to move in the diameter increasing direction.
The screw pieces 2 and 3 integrated by the O-ring 4 are accommodated by the cover body 5 fitted to the nut case 1 by the locking projection 5a in the state accommodated in the bottomed long hole 1a of the nut case 1. Falling off from the nut case 1 is prevented.
[0020]
Reference numeral 6 shown in FIG. 1 (e) denotes a screw piece holding member, in which a screw piece holding hole 6a having an inner diameter slightly larger than the outer diameter of the small diameter portions 2c and 3c of the screw pieces 2 and 3 is formed. The screw piece holding member 6 may be a member to be fastened. In this case, a screw piece holding hole 6a is formed in the member to be fastened.
[0021]
Next, the operation will be described.
FIG. 5 is an operation explanatory view showing the operation of each part of this simple fastening device. When this simple fastening device is inserted in the A direction with respect to a bolt 51 which is a male screw as shown in FIG. As shown in FIG. 6B, the screw piece 2 and the screw piece 3 move in the diameter increasing direction against the urging force of the O-ring 4. Actually, every time the thread of the screw piece 2 and the female thread of the screw piece 3 gets over the thread of the bolt 51, the screw piece 2 and the screw piece 3 are expanded in the diameter increasing direction shown in FIG. Then, the movement in the diameter reducing direction indicated by (b) is repeated. For this reason, by pushing the bolt 51 from the male screw insertion hole 1b, the simple fastening device can be freely arranged at a desired position of the bolt 51 without rotating. In this state, the female screws of the screw piece 2 and the screw piece 3 are pressed against the bolt 51 by the O-ring 4 and maintained in a desired position without falling off the simple fastening device with respect to the bolt 51. .
And after arrange | positioning this simple fastening apparatus, as shown in FIG.5 (c), the screw piece holding hole 6a of the screw piece holding member 6 is fitted by the small diameter parts 2c and 3c of the screw pieces 2 and 3. The screw pieces 2 and 3 are prevented from moving in the diameter increasing direction and function as one nut, and the screw piece holding hole 6a is formed in the screw piece holding member 6 or the member to be fastened as shown in FIG. In this case, the fastened member can be supported or tightened.
[0022]
As described above, according to the first embodiment, unless the screw piece holding hole 6a of the screw piece holding member 6 is fitted into the small diameter portions 2c and 3c of the screw pieces 2 and 3, the bolt 51 is provided in a desired manner. Since it can be moved freely without being rotated to the position, workability at the time of insertion into the bolt 51, tightening of the member via the bolt 51, and removal from the bolt 51 is improved. Furthermore, the nut case 1, screw Since it has a simple structure composed of a total of about six parts such as the pieces 2 and 3, the O-ring 4, the cover body 5, and the screw piece holding member 6 as necessary, it is possible to suppress an increase in cost. is there.
[0023]
Next, a second embodiment of the present invention will be described with reference to the drawings.
FIG. 6 is a structural diagram showing the configuration of the simple fastening device and the operation of each part according to the second embodiment, and the inner peripheral surface of the screw piece holding hole 6a of the screw piece holding member 6 of this simple fastening device is tapered. It is configured as an attached tapered surface. Further, the outer peripheral surfaces of the small diameter portions 2c and 3c of the screw pieces 2 and 3 to be fitted into the screw piece holding hole 6a are also configured as tapered surfaces having a taper that matches the tapered surface of the screw piece holding hole 6a. Yes.
In the simple fastening device of the present embodiment, not only the effects of the first embodiment can be obtained, but also screws to the small diameter portions 2c, 3c of the screw pieces 2, 3 as shown in FIG. 6 (b). The piece holding member 6 can be easily fitted, and the female screws 2b and 3b of the screw pieces 2 and 3 are strongly pressed against the bolt 51 by the taper effect as shown in FIG. When the screw piece holding hole 6a is formed in the member 6 or the member to be fastened, the member to be fastened can be tightened more firmly, and the effect of preventing the loosening of the screw can be expected.
[0024]
Next, a third embodiment of the present invention will be described with reference to the drawings.
FIG. 7A is a structural diagram showing the configuration of the simple fastening device according to the third embodiment. In FIG. 7, 2 g has elasticity formed on the outer peripheral surface of the large-diameter portion 2 d of the screw piece 2. The elastic tongue 3g is an elastic tongue having elasticity formed on the outer peripheral surface of the large-diameter portion 3d of the screw piece 3. The distal ends of the elastic tongues 2g and 3g are in contact with the inner peripheral surface of the bottomed long hole 1a of the nut case 1, and the screw pieces 2 and 3 are urged in the direction of diameter reduction of the female screw and integrated. It has become.
[0025]
As shown in FIG. 7B, the elastic tongues 1 e and 1 f may be configured on the inner peripheral surface of the bottomed long hole 1 a of the nut case 1. In this case, the distal ends of the elastic tongues 1e and 1f are in contact with the outer peripheral surface of the large diameter portion of the screw pieces 2 and 3, and the screw pieces 2 and 3 are urged in the direction of diameter reduction of the female screw and integrated. Turn into.
[0026]
In the simple fastening device of the present embodiment, not only the effects of the first embodiment can be obtained, but also the screw pieces 2 and 3 are urged in the direction of diameter reduction of the female screw without using an O-ring or the like. Since they can be integrated together, the number of equipment is further reduced, and the assembly is facilitated.
[0027]
Next, a fourth embodiment of the present invention will be described with reference to the drawings.
FIG. 8 is a structural diagram showing a configuration of a simple fastening device according to the fourth embodiment. In this simple fastening device, the fitting recess 6 b is formed in the screw piece holding hole 6 a of the screw piece holding member 6, and the fitting protrusions 2 f and 3 f are formed in the small diameter portions 2 c and 3 c of the screw pieces 2 and 3.
Then, as shown in FIG. 8 (a), the screw piece holding hole 6a is pushed into the small diameter portions 2c and 3c of the screw pieces 2 and 3 in the direction of (c) in FIG. The convex portions 2f and 3f are fitted to function as one nut. FIG. 2B shows this state.
[0028]
In the simple fastening device of the present embodiment, the fitting convex portion 2f formed in the small diameter portions 2c and 3c of the screw pieces 2 and 3 into the fitting concave portion 6b formed in the screw piece holding hole 6a of the screw piece holding member 6. 3f, the screw piece holding member 6 is not easily detached from the small diameter portions 2c, 3c of the screw pieces 2, 3, so that one nut can be surely secured regardless of the shape and state of the fastened member. As a result, it is possible to maintain a state of functioning as.
[0029]
Next, a fifth embodiment will be described with reference to the drawings.
FIG. 9 is a structural diagram showing the configuration of the simple fastening device according to the fifth embodiment. In this simple fastening device, the fitting recess 6b and the fitting projections 2f and 3f in the fourth embodiment are configured, the screw piece holding member 6 is provided with a temporary holding projection 6d, and the cover body. An engaging portion 5 b that engages with the protrusion 6 d is configured at the end of 5, and the screw piece holding member 6 is configured to be movable along the side surfaces of the cover body 5 and the nut case 1. The screw piece holding member 6 can be temporarily held on the cover body 5 in a state where the screw piece holding member 6 is locked to the cover body 5 by the locking portion 5b. In this state, as shown in FIG. 9A, the screw pieces 2 and 3 are movable in the diameter increasing direction.
[0030]
In the simple fastening device of the present embodiment, the screw piece holding member 6 is temporarily held by the simple fastening device main body, so that the screw piece holding member 6 and the simple fastening device main body can be handled as an integrated body. It is possible to prevent the holding member 6 from being lost, to carry easily, and to improve workability.
[0031]
Next, a sixth embodiment will be described with reference to the drawings.
FIG. 13 is a structural diagram showing the configuration of the simple fastening device according to the sixth embodiment and the operation of each part. In this simple fastening device, a fixing piece 8 that pushes the screw pieces 2 and 3 through an elastic body 7 is provided in the nut case 1. The screw pieces 2 and 3 have conical convex portions 2r and 3r, and the fixed piece 8 has a conical concave portion that matches the conical convex portions 2r and 3r formed on the screw pieces 2 and 3. 8a is configured.
[0032]
In this simple fastening device, when the simple fastening device main body is moved in the A direction and the bolt 51 is pushed into the simple fastening device main body, the screw pieces 2 and 3 move in the diameter expanding direction against the urging force of the O-ring 4. To do. Actually, every time the screw thread of the screw pieces 2 and 3 exceeds the screw thread of the bolt 51, the screw pieces 2 and 3 are expanded in the diameter direction shown in FIG. Since the movement in the radial direction is repeated, it is only necessary to push in and there is no need to turn the simple fastening device main body. When the simple fastening device main body is pushed in the direction A, the lower end of the fixed piece 8 comes into contact with the mating member 61, the fixed piece 8 moves upward, and the conical convex portions 2r, 3r of the screw pieces 2, 3 Engages with the conical recess 8 a of the fixed piece 8. Thereafter, the conical recess 8a of the fixed piece 8 prevents the screw pieces 2 and 3 from moving in the diameter increasing direction, and functions as one nut to support or tighten the mating member. Further, since the conical convex portions 2r and 3r are fitted into the conical concave portion 8a of the fixed piece 8, there is also an effect of preventing loosening.
[0033]
Next, a seventh embodiment will be described with reference to the drawings.
FIG. 14 is a structural diagram showing the configuration of the simple fastening device according to the seventh embodiment and the operation of each part. In this simple fastening device, screw pieces 2 and 3 are accommodated in a nut case 1 via an elastic body 7 and a cover body 5 having a conical recess 5r. The screw pieces 2 and 3 are formed with conical convex portions 2r and 3r that fit into the conical concave portion 5r of the cover body 5.
[0034]
In this simple fastening device, when the simple fastening device main body is moved in the direction A in FIG. 14A and the bolt 51 is pushed into the simple fastening device main body, the screw pieces 2 and 3 are resisted against the urging force of the O-ring 4. Moves in the diameter expansion direction. Actually, every time the screw thread of the screw pieces 2 and 3 exceeds the screw thread of the bolt 51, the screw pieces 2 and 3 are expanded in the diameter direction shown in FIG. Since the movement in the radial direction is repeated, the simple fastening device main body can be attached to the bolt 51 by simply pushing it in, and there is no need to rotate it. When the simple fastening device main body is pushed in the direction A shown in FIG. 14, the lower ends of the screw pieces 2 and 3 come into contact with the mating member 61, the screw pieces 2 and 3 move upward, and the cone of the screw pieces 2 and 3. The protrusions 2r and 3r having a shape and the conical recess 5r of the cover body 5 are fitted. After that, the conical recess 5r of the cover body 5 prevents the screw pieces 2 and 3 from moving in the diameter increasing direction and functions as one nut, so that the mating member 61 can be supported or tightened. This example also has an effect of preventing loosening.
[0035]
10, FIG. 11 and FIG. 12 are explanatory views showing application examples of the simple fastening device of each embodiment described above.
In order to attach the fluorescent lamp, conventionally, as shown in FIG. 10, the hole of the fluorescent lamp frame 50 is passed through the bolt 51 fixed to the back of the ceiling (floor on the floor). It becomes work procedure to fix the light. In this case, the operation of turning the nut 52 is troublesome, and further, there is a problem in terms of safety because it is a work at a high place.
In the case of using the simple fastening device according to each of the embodiments described above in such work, the bolt 51 is provided with the screw piece holding hole by making the hole of the frame 50 of the fluorescent lamp a screw piece holding hole. The attachment of the fluorescent lamp is completed simply by fitting the holes of the fluorescent lamp frame 50 into the small diameter portions 2c and 3c of the screw pieces 2 and 3 of the simple fastening device body through the holes of the fluorescent lamp frame 50. In this state, when the fine adjustment of the height of the fluorescent lamp is performed, the simple fastening device main body is turned.
[0036]
In order to attach the ceiling, conventionally, as shown in FIG. 11, a hanger 53 that supports the ceiling is attached to a bolt 51 fixed to the back of the ceiling (floor on the floor) as shown in FIG. The fixing holes of the hanger 53 are passed through the bolts 51 and fixed with nuts 52, and the leafing of turning the nuts 52 is troublesome, and there is also a problem in terms of safety because of the work at a high place.
When using the simple fastening device of each embodiment described above in such work, the fixing hole of the hanger 53 is formed in the bolt 51 by making the fixing hole of the hanger 53 a screw piece holding hole. After passing, the simple fastening device main body is passed through the bolt 51, and the fixing holes of the hanger 53 are fitted into the small diameter portions 2c and 3c of the screw pieces 2 and 3, and the mounting of the hanger 53 is completed. Note that the fine adjustment of the height of the hanger 53 is performed by turning the main body of the simple fastening device.
[0037]
In addition, as shown in FIG. 12, the drain pipe is installed on a bolt 51 standing upright from the floor using a band 55 and a nut 52 that support the drain pipe 54, but considering the gradient of the drain pipe 54. Therefore, it is necessary to adjust the height by turning the nut 52, which is an extremely troublesome work.
In the case of using the simple fastening device of each of the embodiments described above in such work, the height of the simple fastening device is passed through the bolt 52 by setting the fixing hole of the band 55 as a screw piece holding hole. After the rough adjustment of the band 55, the fixing hole of the band 55 is simply fitted into the small diameter portions 2c and 3c of the screw pieces 2 and 3 of the simple fastening device body by passing the fixing hole of the band 55 through the bolt 52. Installation is complete. The fine adjustment of the gradient of the drain pipe 54 can be performed by turning the simple fastening device body.
In addition to the above-described uses, the uses are wide, such as supporting electrical wiring behind the ceiling and attaching ducts.
[0038]
【The invention's effect】
As described above, according to the present invention, the plurality of screw pieces formed with the female screws, and the screw piece integration means for urging and integrating the plurality of screw pieces in the diameter reducing direction of the female screws. A male screw that accommodates the plurality of screw pieces integrated by the screw piece integrating means so as to be movable in a direction parallel to the diameter-expanding direction, and is inserted with a male screw that engages with a female screw of the screw piece. Since it has a female screw case in which an insertion hole is formed and a restraining member that is attached to the female screw case so as to be engageable with the screw piece and restricts the movement of the screw piece in the diameter increasing direction by the engagement , When the screw is pushed into the male screw insertion hole, each of the plurality of screw pieces moves in the radial direction of the female screw, and the male screw can freely move to a desired position, and the screw piece in the diameter increasing direction. moved from that it comprises a restraining member for restraining a expansion of each screw frame Since the movement of the direction is constrained and each screw piece functions as one female screw body, the workability at the time of insertion into the male screw, tightening of the member via the male screw, and removal from the male screw is improved. In addition, an increase in cost can be suppressed with a simpler structure.
[Brief description of the drawings]
FIG. 1 is a structural diagram showing the configuration of a simple fastening device according to a first embodiment of the present invention.
FIG. 2 is a structural diagram showing a configuration of a nut case of the simple fastening device according to the first embodiment of the present invention.
FIG. 3 is a structural diagram showing the configuration of a screw piece of the simple fastening device according to the first embodiment of the present invention.
FIG. 4 is a structural diagram showing a configuration of a cover body for housing a screw piece in a nut case of the simple fastening device according to the first embodiment of the present invention.
FIG. 5 is an operation explanatory view showing the operation of each part of the simple fastening device according to the first embodiment of the present invention.
FIG. 6 is a structural diagram showing the configuration of a simple fastening device according to a second embodiment of the present invention and the operation of each part.
FIG. 7 is a structural diagram showing the configuration of a simple fastening device according to a third embodiment of the present invention.
FIG. 8 is a structural diagram showing a configuration of a simple fastening device according to a fourth embodiment of the present invention.
FIG. 9 is a structural diagram showing the configuration of a simple fastening device according to a fifth embodiment of the present invention.
FIG. 10 is an explanatory view showing an application example of the simple fastening device according to the embodiment of the present invention.
FIG. 11 is an explanatory view showing an application example of the simple fastening device according to the embodiment of the present invention.
FIG. 12 is an explanatory view showing an application example of the simple fastening device according to the embodiment of the present invention.
FIG. 13 is a structural diagram showing the configuration of a simple fastening device according to a sixth embodiment of the present invention and the operation of each part.
FIG. 14 is a structural diagram showing the configuration of a simple fastening device according to a seventh embodiment of the present invention and the operation of each part.
[Explanation of symbols]
1 Nut case (female screw case)
1b Male thread insertion holes 1f, 1e Elastic tongue members 2, 3 Screw pieces 2c, 3c Small diameter part (protrusion part)
2e, 3e Groove (screw piece integration means)
2g, 3g Elastic tongue-like members 2f, 3f Fitting convex part (protruding part side locking part)
4 O-ring (screw piece integration means)
5 Cover body (female screw case)
6 Screw piece holding member (restraint member)
6b Fitting recess (restraint member side locking part)

Claims

A plurality of screw pieces formed with female screws;
Screw piece integration means for urging and integrating the plurality of screw pieces in the direction of diameter reduction of the female screw;
Male screw insertion through which the plurality of screw pieces integrated by the screw piece integration means are movably accommodated in a direction parallel to the diameter-expanding direction, and a male screw to be screwed into the female screw of the screw piece is inserted. A female screw case with a hole formed therein;
A simple fastening device comprising a restraining member that is engageable with the screw piece and restrains movement of the screw piece in the diameter-enlarging direction by the engagement .

2. The simple fastening device according to claim 1, further comprising positioning means that engages with each of the screw pieces and adjusts the position of the screw hole of the integrated screw piece to the position of the male screw insertion hole. .

The simple fastening device according to claim 1, wherein the restraining member is attached to the female screw case so as to be engageable with a screw piece.

Each screw piece is formed with a conical convex part, and the constraining member is formed with a conical concave part corresponding to the convex part, and the concave part is formed with the convex part as the male screw is inserted. 2. The simple fastening device according to claim 1, comprising a fixed piece movably provided in the female screw case so as to be fitted and restrain the movement of the screw piece in the diameter increasing direction.

Each screw piece is formed with a conical convex part, and the constraining member is formed with a conical concave part corresponding to the convex part, and the concave part is formed with the convex part as the male screw is inserted. 2. The simple fastening device according to claim 1, comprising a cover body that is fitted to the female screw case so as to be fitted and restrain the movement of the screw piece in the diameter increasing direction.

The screw piece integrating means includes a groove formed continuously on the outer periphery of each of the plurality of screw pieces over the screw pieces, and a ring formed of an elastic body wound around the grooves of the screw pieces. The simple fastening device according to claim 1, further comprising:

The screw piece integration means is formed on an outer peripheral surface of each of the plurality of screw pieces, and is provided with an elastic tongue-like member having elasticity in which a tip portion is in contact with an inner peripheral surface of a female screw case storing the screw pieces. simple fastening device according to claim 1, wherein the integrating urges a plurality of screws pieces direction of reducing the diameter of the female thread.

The screw piece integrating means is formed on the inner peripheral surface of the female screw case, and the plurality of screw tongues are elastically formed by elastic tongue-like members having tips that are in contact with outer peripheral surfaces of the plurality of screw pieces housed in the female screw case. simple fastening device according to claim 1, wherein the screw piece, characterized in that integrated with biasing direction of reducing the diameter of the female thread.