JP2004028325A

JP2004028325A - Bolt support

Info

Publication number: JP2004028325A
Application number: JP2002308936A
Authority: JP
Inventors: Yoshihiro Miura; 三浦　義洋; Hideo Kimura; 木村　秀雄; Yasukuni Nishikawa; 西川　泰邦
Original assignee: Sanwa Shutter Corp; Ochiai Co Ltd
Current assignee: Sanwa Shutter Corp; Ochiai Co Ltd
Priority date: 2002-05-08
Filing date: 2002-10-23
Publication date: 2004-01-29
Anticipated expiration: 2022-10-23
Also published as: JP4239062B2

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a fall of a bolt support from a member in the condition that the bolt support is only inserted into the member in the bolt support for fixing members with the fitting operation in one side. <P>SOLUTION: A hole 14 is formed in a central part of a crossing of a cross-shaped plate formed of short pieces 11 and long pieces 21 crossing each other, and outside of the lateral pieces in the central part of the crossing are bent opposite to each other to form a pair of standing pieces 31, and outside of the vertical pieces in the central part of the crossing are bent opposite to each other in a direction opposite to the pair of standing pieces to form a pair of leg pieces 41. A tip of each leg piece is bent outside to provide a lock piece 42. A nut support member 30, which is formed by providing a deformation propelling part formed of an opening part 23 formed in each leg piece and a bent line 44 provided to ride over the opening part, and a square nut 50, which is arranged by fitting in a part pinched by the pair of standing pieces of the nut support material and which is formed with a hole 53 corresponding to the hoe 14, are provided. A swelling part 45 swelled outside is provided in the leg piece 41 at a position under the opening. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、部材同士をボルトとナットで固定する場合に、一方の部材裏面からナットを装着できないようなときに、他方の部材の表面側からの片側作業による取り付け操作で部材同士の固定を行うことができるボルト支持具に関し、特にボルト締め付けによる部材固定作業を行う前であっても、一方の部材裏面に仮取り付けが可能で、更に製造が容易で安価に提供することができるボルト支持具の構造に関する。
【０００２】
【従来の技術】
従来、この種のボルト支持具１００としては、図８に示すように、周囲に複数の脚部８１が形成された樽状部８０と、中央にボルト貫通孔９１が形成された環状部９０とを有し、樽状部８０の底面から内部側に向かって、ネジ山部８２が形成された筒部８３を形成して成るものが提案されている（例えば、特許文献１参照）。樽状部８０の各脚部８１間には複数の縦孔８４が形成され、脚部８１の中央部には外側に凸状となる折曲部８５が形成されている。
【０００３】
【特許文献１】
アメリカ特許２，９６４，９８９号
【０００４】
このボルト支持具１００を部材に固定する場合には、図９に示すように、部材２００に設けられた孔部２０１に挿入して部材２００を貫通するように配置し、環状部９０側からボルト（図示せず）を挿入して樽状部８０のネジ山部８２に対して螺進させると、脚部８１が折曲部８５で外側に折り曲がり環状部９０に対して樽状部８０の底部が近づくことで、部材２００に対するボルト支持具１００の固定が行われる。
【０００５】
【発明が解決しようとする課題】
しかしながら上記ボルト支持具１００によれば、ボルト支持部１００を孔部２０１に挿し込んだだけで（ボルト（図示せず）を挿入、螺進させて部材２００に固定せずに）、部材２００を移動（工場内のハンドリング等）させると、しばしばボルト支持具が脱落して紛失するという問題点があった。
【０００６】
また、樽状部８０の底部にネジ山部８２を設けているので、ボルト支持具１００に直接ネジ山を形成する必要があり、製造工程が複雑になるという問題点があった。
【０００７】
本発明は上記実情に鑑みてなされたもので、片側作業による取り付け操作で部材同士の固定を行うことができるボルト支持具において、ボルト支持具を一方の部材に挿し込んだだけで、工場内でのハンドリング時等に脱落することがなく、更に構造を簡単にすることで安価に製造することが可能な構成を提供することを目的としている。
【０００８】
【課題を解決するための手段】
上記目的を達成するため請求項１に係るボルト支持具は、部材６０に設けた孔部６１にその表面側から脚片（４１、１１３）を挿し込み、前記部材６０の裏面側に位置する脚片側に取り付けられたナット（方形状ナット５０，ナット部１２０）に対して表面側よりボルト７２を螺進させることで前記脚片（４１、１１３）を変形させて前記部材６０への固定が行われるボルト支持具であって、前記ボルト支持具を前記孔部６１に挿し込んだ際に、前記部材６０の裏面に係止してボルト支持具が孔部６１から脱落することを防止する係止爪（膨張部４５，爪１１６）を設けて成ることを特徴としている。
【０００９】
請求項２は、請求項１のボルト支持具において、前記係止爪（膨張部４５）を脚片４１に設けたことを特徴としている。
【００１０】
請求項３のボルト支持具は、ナット支持部材３０と方形状ナット５０を具備して構成され、ナット支持部材３０は、縦片２１と横片１１とが交差した十字状板の交差中央に孔部１４を形成し、前記横片１１の交差中央外側を互いに対向するようにそれぞれ折曲して立片３１対を形成し、前記縦片２１の交差中央外側を互いに対向するように前記立片対と反対側にそれぞれ折曲して脚片４１対を形成し、各脚片４１の先端を外側に折曲して係止片４２を設け、前記各脚片４１に形成した開口部２３と該開口部２３を跨ぐように設けた折曲線４４とで変形促進部を設け、前記脚片４１の開口部下方に外側に膨らむ係止爪（膨出部４５）を設けて構成されている。
方形状ナット５０は、前記ナット支持材３０の前記立片３１対で挟まれた部位に嵌合配置され前記孔部１４に対応する孔部５２が形成されている。
【００１１】
請求項４は、請求項３のボルト支持具において、立片３１の両側面に内側に折曲形成された支持片３２を設けたことを特徴としている。
【００１２】
請求項５は、請求項３のボルト支持具において、立片３１の内壁を下方に切り起こして形成された爪部３３を設けたことを特徴としている。
【００１３】
請求項６のボルト支持具は、台部１１１中央に孔部１１２を有するとともに変形可能な脚片１１３を有する脚台部１１０と、前記台１１１部に連結固定されたナット部１３０とを具備し、各脚片１１３の先端を外側に折曲して係止片１１４を形成し、前記脚片１１３間に位置する脚台部１１０に反ナット部側に突出するように爪１１６を形成したことを特徴としている。
【００１４】
本発明によれば、ボルト支持具１に係止爪（膨出部４５，爪１１６）を設けることにより、部材６０に設けた孔部６１にその表面側から脚片（４１、１１３）を挿し込んだ際に、ボルト支持具１が孔部６１から脱落するのを防止できる。
【００１５】
また、請求項３のボルト支持具によれば、ナット支持部材３０について十字状板をプレス加工して折り曲げることで形成できるので、ナット支持部材３０を含めて一体的に形成でき、構造が簡単で容易に製造できるボルト支持具とすることができる。
【００１６】
【発明の実施の形態】
本発明の実施の形態の一例としてのボルト支持具について、図１乃至図４を参照しながら説明する。
図１はボルト支持具の斜視説明図、図２はプレス加工される前のナット支持部材の展開形状を示す平面説明図、図３（ａ）（ｂ）（ｃ）はボルト支持具を構成するナット支持部材の正面説明図、側面説明図及び平面説明図、図４（ａ）（ｂ）は方形状ナットの正面説明図及び平面説明図である。
【００１７】
ボルト支持具１は、板片１０をプレス加工して形成されるナット支持部材３０と、このナット支持部材３０に嵌合配置される方形状ナット５０とから構成されている。
ナット支持部材３０は、図２に示されるように、短片（横片）１１と長片（縦片）２１とが交差した十字状板の交差中央の正方形部１３に孔部１４を設けた板片１０をプレス加工することで形成される。板片１０の各短片１１には、その中央に方形穴部１５が形成され、その両端上方側にこの方形穴部１５に繋がる切り込み線１６が互に平行するように設けられている。また、各短片１１の両側面には、方形凸状となる突出片１７がそれぞれ形成されている。
【００１８】
板片１０の各長片２１は端部側に幅広部２２が形成され、この幅広部２２より内側部分に方形状の開口部２３が形成されている。幅広部２２には、端部側にコ字型となる切欠部２４が形成されている。
【００１９】
そして、プレス加工を施すことにより、短片１１の交差中央外側を互いに対向するようにそれぞれ折曲して立片３１対を形成し、長片２１の交差中央外側を互いに対向するように立片３１対と反対側にそれぞれ折曲して脚片４１対を形成する。
幅広部２２の切欠部２４の下端部分を外側に折曲して係止片４２を設ける。この係止片４２には、前記切欠部２４の内側部分が脚片４１間に配置する内側係止部４３が形成されている。
【００２０】
各脚片４１には、開口部２３を跨ぐ位置に折曲線４４を形成することで、開口部２３の形成と相俟って変形促進部を設けている。この変形促進部は、脚片４１に押圧力がかかった際に、脚片４１が折り曲がり易い構造を得るためのものであり、開口部２３を形成することで強度を弱くした位置に折曲線４４を形成している。そのため、脚片４１に押圧力がかかった場合には、開口部２３を跨ぐ折曲線４４の位置で脚片４１が折り曲げられるようになっている。
【００２１】
また、脚片４１の開口部２３下方を、外側に膨らむようにプレス加工することで係止爪の作用を呈する膨出部４５を形成している。この膨出部４５は、部材の孔部に挿し込んだ際にボルト支持具１が脱落することを防止するとともに、脚片４１に押圧力がかかった場合に力が集中する箇所を調整する作用を有するものであり、この作用の詳細については後述する。
【００２２】
短片１１の両側面の突出片１７は、それぞれプレス加工により立片３１に対して内側に折曲形成されて支持片３２を形成している。
また、短片１１に形成された方形穴部１５に繋がる切り込み部１６の連結側を内側に折曲することで、立片３１に対して下方に傾斜させて配置された爪部３３を設けている。
上述のナット支持部材の構造によれば、十字状板をプレス加工して折り曲げることで形成できるので、構造が簡単で容易に製造することができる。
【００２３】
ナット支持部材３０の立片３１対で挟まれた部位に嵌合配置される方形状ナット５０は、ナット支持材３０の孔部１４に対応する孔部５２が中央に形成されている。この孔部５２にはボルト螺進用のネジ山５３が形成されている。このネジ山５３は、従来例のように本体側に設けられておらず方形状ナット５０に設けているので、その加工を容易に行うことができる。
【００２４】
次に、上記構造のボルト支持具１を使用して部材同士の固定を行う場合について、図５乃至図７を参照しながら説明する。
先ず、ナット支持部材３０の立片３１対で挟まれた部位に、上方より方形状ナット５０を嵌合配置することで、ボルト支持具１を構成しておく（図５）。この時、方形状ナット５０は、内側に傾斜する爪部３３に抗して押し込まれるので、嵌合後は爪部３３で固定されることになる。
【００２５】
一方の部材６０に形成された方形状の孔部６１にボルト支持具１を立片３１側から挿入し（図６（ａ））、立片３１側を部材６０裏面側に位置させ、係止片４２が部材６０の表面側の面に当接するように配置させる（図６（ｂ））。この状態においては、膨出部４５が孔部６１の外側に位置しているので、膨出部４５が引っかかりボルト支持具１が孔部６１から落下することがなく、部材裏面への仮取り付けが可能となる。
【００２６】
尚、この例では、係止爪の作用を呈する膨出部４５が部材６０面に引っかかることによりボルト支持具１の孔部６１からの脱落を防止しているが、部材６０に対してボルト支持具１を配置させた状態で、部材６０にボルト支持具１が固定されるような膨出部４５の形状であってもよい。
【００２７】
他方の部材７０に形成されたボルト孔７１にボルト７２を配置し、このボルト７２の先端が方形状ナット５０の孔部５３に臨ませる（図（ｂ））。
ボルト７２を方形状ナット５０のネジ山５３内で螺進させて締め付けると、ボルト７２に対してボルト支持具１が近づき膨出部４５の下端が部材６０の表面に当接する（図６（ｃ））。この時、係止片４２の下面は部材７０の表面に当接する一方、係止片４２の上面は、部材６０の裏面から少し離れて位置している（図６（ｃ））。
【００２８】
膨出部４５の下端が部材６０の表面に当接する状態で更にボルト７２を締め付けると、脚片４１において、方形状ナット５０及び立片３１側をボルト７２頭部側に近づける方向に押圧力が生じ、膨出部４５の存在により膨出部４５上方に押圧力が集中し、脚片４１の曲がり易い部分である変形促進部が押圧力に屈し、開口部２３を跨ぐ折曲線４４の位置で折り曲げられる（（図７（ａ））。
【００２９】
更にボルト７２を螺進させることで締め付けると、折曲線４４での変形が大きくなるとともに、孔部６１に位置する脚片４１が内側に凸状となる円弧状に変形し（図７（ｂ））、脚片４１の内側同士が接する状態まで完全に折り曲げられ、膨出部４５も潰される（図７（ｃ））。この状態では、係止片４２の上面も部材６０の裏面に接するように変形しており、部材６０と部材７０との確実な固定が行われる。
【００３０】
また、方形状孔部６１の大きさについては、方形状ナット５０に対してその両側に存在する間隙ｔが、脚片４１における板厚の２倍以下に設定することにより、脚片４１の過剰な屈曲を防止してボルト支持具１が方形状孔部６１から外れないようになっている。すなわち、前記間隙ｔが脚片４１における板厚の２倍を超えていると、ボルトの締め付けにより脚片４１が更に折り曲げられ、係止片４２に対して立設する位置まで変形すると、孔部６１の内側に脚片４１が位置してボルト支持具１が孔部６１から抜け出される場合がある。
【００３１】
このボルト支持具１を使用すれば、ボルト支持具１の挿入、ボルト支持具１へのボルト７２の固定による部材同士６０，７０の固定について、部材の片側からの作業のみで実現することができ、部材の裏面側での作業が困難な箇所での部材同士の固定を容易に行うことができる。
【００３２】
また、部材６０，７０同士の間に係止片４２が位置し、部材７０の表面にはボルト頭部７２ａしか見えない構造としたので、部材表面側においてシンプルなデザインを実現することができる。
【００３３】
また、ボルト支持具１を構成するナット支持部材３０は、十字状板をプレス加工して折り曲げることで形成できるので、ナット支持部材３０を含めて一体的に形成でき、構造が簡単で容易に製造できるボルト支持具を得ることができる。
【００３４】
次に、ボルト支持具の実施の形態の第二の例について、図１０及び図１１を参照しながら説明する。
このボルト支持具は、脚台部１１０と、これに連結固定されたナット部１３０とを具備して構成されている。
脚台部１１０は、天板面となる円形状の台部１１１の中央に孔部１１２を有するとともに、図１〜図７に示した第一の実施の形態と同様に、変形可能な一対の脚片１１３を形成している。各脚片１１３は互に対向する位置に形成され、下端に外側に折曲された係止片１１４が形成されるとともに、脚片１１３の変形が容易になされるように、脚片１１３の両側面のほぼ中央位置に切り欠き部１１５が形成されている。切り欠き部１１５は、台部１１１と平行になる線１１５ａと係止片１１４側に傾斜する傾斜線１１５ｂとを含んだ切り込み線により形成されている。
【００３５】
台部１１１上には、六角状のナット部１３０が脚台部１１０の孔部１１２に対してナット部１３０の下端部分をかしめ処理することにより連結固定されている。ナット部１３０には孔部１３１が形成され、孔部１３１の内壁にはネジ山１３２が形成されている。
また、脚片１１３間には、脚台部１１０から反ナット部側に突出するように折曲形成して成る一対の爪１１６が形成されている。爪１１６は方形状で長さが脚片１１３の１／２程度で構成されており、その先端が脚台部１１０より大きな円周上に位置するように傾斜している。
この例では爪１１６を方形状に形成したが、先端部分が細くなる三角形状や楔形状としてもよい。
【００３６】
図１２は、上記したボルト支持具の第二の例の変形例を示すもので、脚台部１１０の反ナット部１３０装着側に、台部１１１裏面の周囲を囲むように壁部１２０を立設して構成されている。この壁部１２０の存在により、脚台部１１０の強度を増加させることができる。爪１１６は、壁部１２０から突出するように形成している。他の構成は図１０及び図１１に記載のボルト支持具１と同様であるので、同一構成部分に同一符合を付して説明を省略する。
【００３７】
続いて、上記構造のボルト支持具１を使用して部材同士の固定を行う場合について、図１３を参照しながら説明する。
一方の部材６０に形成された方形状の孔部６１にボルト支持具１を脚片１１３側から挿入し（図１３（ａ））、ナット部１３０側を部材６０裏面側に位置させ、係止片１１４が部材６０の表面側の面に当接するように配置させる（図１３（ｂ））。この状態においては、爪１１６が孔部６１の外側に位置しているので、爪１１６が引っかかりボルト支持具１が孔部６１から落下することがなく、部材裏面への仮取り付けが可能となる。
【００３８】
他方の部材７０に形成されたボルト孔７１にボルト７２を配置し、このボルト７２の先端がナット部１３０の孔部１３２に臨ませる。
ボルト７２をナット部１３０のネジ山１３２内で螺進させて締め付けると、ボルト７２に対してボルト支持具１が近づき爪１１６の下端が部材６０の表面に当接する（図示せず）。
【００３９】
爪１１６の下端が部材６０の表面に当接する状態で更にボルト７２を締め付けると、脚片１１３において、ナット部１３０側をボルト７２頭部側に近づける方向に押圧力が生じ、脚片１１３の曲がり易い部分である切り欠き部１１５が押圧力に屈し、この位置（切り込み線１１５ａ）で折り曲げられる。
【００４０】
更にボルト７２を螺進させることで締め付けると、切り欠き部１１５での変形が大きくなり脚片１１３の内側同士が接する状態まで完全に折り曲げられ、爪１１６も潰され、部材６０と部材７０との確実な固定が行われる（図１３（ｃ））。
なお、図１３（ｃ）では、脚片１１３部分の断面が示されている。
【００４１】
【発明の効果】
本発明によれば、ボルト支持具に係止爪を設けることにより、部材に設けた孔部にその表面側から脚片を挿し込んだ際に、係止爪が部材に係止されることによりボルト支持具が部材の孔部から脱落するのを防止でき、部材にボルト支持具を装着した状態での移動（工場内のハンドリング等）においての取扱作業の容易性を向上させることができる。
【００４２】
また、ボルトが螺進するネジ山は方形状ナット（ナット部）側に設けられているので、その加工を容易に行うことができる。
【図面の簡単な説明】
【図１】本発明の実施の形態の一例のボルト支持具を示す斜視説明図である。
【図２】ボルト支持具を構成するナット支持部材のプレス加工前の展開状態を示す平面説明図である。
【図３】ボルト支持具を構成するナット支持部材を示すもので、（ａ）は平面説明図、（ｂ）は正面説明図、（ｃ）は側面説明図である。
【図４】方形状ナットを示すもので、（ａ）は平面説明図、（ｂ）は正面説明図である。
【図５】方形状ナットの挿入状態を説明するボルト支持具の正面説明図である。
【図６】（ａ）〜（ｃ）は部材同士の固定を行う場合のボルト支持具の変形過程を説明するための断面説明図である。
【図７】（ａ）〜（ｃ）は図６に続くボルト支持具の変形過程を説明するための断面説明図である。
【図８】従来のボルト支持具の斜視説明図である。
【図９】従来のボルト支持具の固定状態を示す断面説明図である。
【図１０】本発明の実施の形態の第二の例のボルト支持具を示す斜視説明図である。
【図１１】ボルト支持具を示すもので、（ａ）は平面説明図、（ｂ）は側面説明図である。
【図１２】ボルト支持具の他の例を示す正面説明図である。
【図１３】（ａ）〜（ｃ）は部材同士の固定を行う場合のボルト支持具の変形過程を説明するための断面説明図である。
【符号の説明】
１…ボルト支持具、
１０…板片、　１１…短片（横片）、　１４…孔部、
２１…長片（縦片）、　２３…開口部、
３０…ナット支持部材、　３１…立片、　３２…支持片、　３３…爪部、
４１…脚片、　４２…係止片、　４４…折曲線、　４５…膨出部、
５０…方形状ナット、　５２…孔部、　５３…ネジ山、
６０…部材、　６１…孔部、
７０…部材、　７１…ボルト孔、７２…ボルト、
１１０…脚台部、　１１１…台部、
１１３…脚片、　１１４…係止片、　１１５…切り欠き部、　１１６…爪、
１３０…ナット部、　１３１…孔部、　１３２…ネジ山[0001]
TECHNICAL FIELD OF THE INVENTION
According to the present invention, when members are fixed to each other with bolts and nuts, when the nut cannot be attached from the back surface of one member, the members are fixed by a mounting operation by one side operation from the front side of the other member. In particular, a bolt support which can be temporarily attached to the back surface of one of the members even before a member fixing operation is performed by tightening bolts, and which can be provided easily and inexpensively. Regarding the structure.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, this type of bolt support 100 includes a barrel-like portion 80 having a plurality of legs 81 formed therearound, and an annular portion 90 having a bolt through-hole 91 formed in the center. And a cylindrical portion 83 formed with a thread portion 82 from the bottom surface of the barrel portion 80 toward the inside is proposed (for example, see Patent Document 1). A plurality of vertical holes 84 are formed between the legs 81 of the barrel-shaped portion 80, and a bent portion 85 that is convex outward is formed at the center of the legs 81.
[0003]
[Patent Document 1]
US Patent No. 2,964,989
When the bolt support 100 is fixed to a member, as shown in FIG. 9, the bolt support 100 is inserted into a hole 201 provided in the member 200 and arranged so as to penetrate the member 200. When a screw (not shown) is inserted and screwed into the thread portion 82 of the barrel 80, the leg 81 is bent outward at the bent portion 85 and the barrel 80 is By approaching the bottom, the bolt support 100 is fixed to the member 200.
[0005]
[Problems to be solved by the invention]
However, according to the bolt support 100 described above, the member 200 is simply inserted into the hole 201 (without inserting and bolting a bolt (not shown) and fixing the bolt 200 to the member 200). When moved (handling in a factory, etc.), there is a problem that the bolt support often falls off and is lost.
[0006]
In addition, since the thread portion 82 is provided at the bottom of the barrel-shaped portion 80, it is necessary to form the thread directly on the bolt support 100, and there is a problem that the manufacturing process becomes complicated.
[0007]
The present invention has been made in view of the above circumstances, and in a bolt support that can fix members to each other by a mounting operation by one side operation, only by inserting the bolt support into one member, the factory It is an object of the present invention to provide a configuration which can be manufactured at a low cost by preventing the structure from dropping off at the time of handling or the like and further simplifying the structure.
[0008]
[Means for Solving the Problems]
To achieve the above object, the bolt support according to claim 1, wherein the leg pieces (41, 113) are inserted from the front side into the hole 61 provided in the member 60, and the leg positioned on the back side of the member 60. By screwing a bolt 72 from the front side to a nut (square nut 50, nut portion 120) attached to one side, the leg pieces (41, 113) are deformed and fixed to the member 60. A bolt support for locking the bolt support to the back surface of the member 60 to prevent the bolt support from dropping out of the hole 61 when the bolt support is inserted into the hole 61. It is characterized by having claws (expansion part 45, claws 116).
[0009]
According to a second aspect of the present invention, in the bolt support of the first aspect, the locking claw (expanding portion 45) is provided on the leg piece 41.
[0010]
The bolt support of claim 3 is provided with a nut support member 30 and a square nut 50, and the nut support member 30 has a hole in the center of the cross of the cross plate where the vertical piece 21 and the horizontal piece 11 intersect. A portion 14 is formed, and the outside of the center of intersection of the horizontal pieces 11 is bent so as to face each other to form a pair of standing pieces 31, and the outside of the center of intersection of the vertical pieces 21 is opposed to each other. Each of the legs 41 is bent to the opposite side to form a pair of legs 41, and the tip of each leg 41 is bent outward to form a locking piece 42. A deformation promoting portion is provided by a folding curve 44 provided so as to straddle the opening 23, and a locking claw (bulging portion 45) bulging outward is provided below the opening of the leg 41.
The square nut 50 is fitted and disposed at a portion of the nut support member 30 sandwiched between the pair of standing pieces 31, and a hole 52 corresponding to the hole 14 is formed.
[0011]
A fourth aspect of the present invention is characterized in that, in the bolt support of the third aspect, a support piece 32 bent inward is provided on both side surfaces of the standing piece 31.
[0012]
According to a fifth aspect of the present invention, in the bolt support of the third aspect, a claw portion 33 formed by cutting and raising the inner wall of the standing piece 31 downward is provided.
[0013]
The bolt support of claim 6 includes a leg base 110 having a hole 112 at the center of the base 111 and having a deformable leg 113, and a nut part 130 fixedly connected to the base 111. The locking piece 114 is formed by bending the tip of each leg 113 outward, and the claw 116 is formed on the footrest 110 located between the legs 113 so as to project toward the nut side. It is characterized by.
[0014]
According to the present invention, by providing the locking claw (bulging portion 45, claw 116) on the bolt support 1, the leg pieces (41, 113) are inserted into the hole 61 provided on the member 60 from the surface side thereof. When it is inserted, the bolt support 1 can be prevented from dropping out of the hole 61.
[0015]
According to the bolt support of claim 3, the nut support member 30 can be formed by pressing and bending a cross-shaped plate, so that the nut support member 30 and the nut support member 30 can be integrally formed, and the structure is simple. A bolt support that can be easily manufactured can be provided.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
A bolt support as an example of an embodiment of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective explanatory view of a bolt support, FIG. 2 is a plan explanatory view showing a developed shape of a nut support member before being pressed, and FIGS. 3A, 3B, and 3C constitute a bolt support. FIGS. 4 (a) and 4 (b) are a front view and a plan view of a square nut, respectively.
[0017]
The bolt support 1 includes a nut support member 30 formed by pressing a plate piece 10 and a square nut 50 fitted and arranged on the nut support member 30.
As shown in FIG. 2, the nut support member 30 is a plate in which a short portion (horizontal piece) 11 and a long piece (vertical piece) 21 intersect with each other, and a hole 14 is provided in a square portion 13 at the center of the cross. The piece 10 is formed by pressing. A rectangular hole 15 is formed at the center of each short piece 11 of the plate piece 10, and cut lines 16 connected to the rectangular hole 15 are provided on upper sides of both ends thereof so as to be parallel to each other. Protruding pieces 17 each having a square convex shape are formed on both side surfaces of each short piece 11.
[0018]
Each long piece 21 of the plate piece 10 has a wide portion 22 formed on the end side, and a rectangular opening 23 is formed inside the wide portion 22. The wide portion 22 is formed with a U-shaped notch 24 at the end.
[0019]
Then, by performing press working, the outside of the intersection center of the short piece 11 is bent so as to face each other to form a pair of standing pieces 31, and the outside of the intersection center of the long piece 21 is opposed to each other so as to face each other. Each pair is bent to the opposite side to form a pair of leg pieces 41.
A locking piece 42 is provided by bending the lower end of the cutout 24 of the wide portion 22 outward. The locking piece 42 has an inner locking portion 43 in which the inner portion of the cutout 24 is disposed between the leg pieces 41.
[0020]
Each leg 41 is provided with a deformation promoting portion by forming a fold curve 44 at a position straddling the opening 23 in combination with the formation of the opening 23. The deformation accelerating portion is provided to obtain a structure in which the leg 41 is easily bent when a pressing force is applied to the leg 41, and is formed at a position where the strength is weakened by forming the opening 23. 44 are formed. Therefore, when a pressing force is applied to the leg 41, the leg 41 is bent at the position of the folding curve 44 that straddles the opening 23.
[0021]
In addition, a swelling portion 45 that functions as a locking claw is formed by pressing the lower portion of the opening 23 of the leg 41 so as to swell outward. The swelling portion 45 prevents the bolt support 1 from dropping when inserted into the hole of the member, and adjusts a portion where the force concentrates when a pressing force is applied to the leg 41. The details of this operation will be described later.
[0022]
The protruding pieces 17 on both side surfaces of the short piece 11 are bent inward with respect to the standing piece 31 by press working, respectively, to form support pieces 32.
In addition, the connection side of the cut portion 16 connected to the square hole portion 15 formed in the short piece 11 is bent inward to provide the claw portion 33 that is arranged to be inclined downward with respect to the standing piece 31. .
According to the structure of the nut support member described above, since the cross-shaped plate can be formed by pressing and bending the cross-shaped plate, the structure can be simple and easily manufactured.
[0023]
The square nut 50 fitted and fitted to the portion of the nut support member 30 sandwiched between the pair of standing pieces 31 has a hole 52 corresponding to the hole 14 of the nut support 30 formed in the center. A screw thread 53 for screwing the bolt is formed in the hole 52. Since the thread 53 is not provided on the main body side as in the conventional example, but is provided on the square nut 50, the processing can be easily performed.
[0024]
Next, a case where members are fixed to each other using the bolt support 1 having the above structure will be described with reference to FIGS.
First, the bolt support 1 is configured by fitting a square nut 50 from above into a portion sandwiched between the pair of standing pieces 31 of the nut support member 30 (FIG. 5). At this time, since the square nut 50 is pushed in against the claw 33 inclined inward, it is fixed by the claw 33 after fitting.
[0025]
The bolt support 1 is inserted into the rectangular hole 61 formed in one of the members 60 from the side of the upright 31 (FIG. 6A), and the upright 31 is positioned on the back side of the member 60 and locked. The piece 42 is arranged so as to contact the surface on the front side of the member 60 (FIG. 6B). In this state, since the swelling portion 45 is located outside the hole portion 61, the swelling portion 45 is not caught and the bolt support 1 does not drop from the hole portion 61, and the temporary attachment to the back surface of the member can be performed. It becomes possible.
[0026]
In this example, the bulging portion 45 having the function of a locking claw is prevented from dropping out of the hole 61 of the bolt support 1 by being hooked on the surface of the member 60. The bulging portion 45 may be shaped so that the bolt support 1 is fixed to the member 60 in a state where the tool 1 is arranged.
[0027]
A bolt 72 is disposed in a bolt hole 71 formed in the other member 70, and the tip of the bolt 72 faces the hole 53 of the square nut 50 (FIG. (B)).
When the bolt 72 is screwed into the screw thread 53 of the square nut 50 and tightened, the bolt support 1 approaches the bolt 72, and the lower end of the bulging portion 45 contacts the surface of the member 60 (FIG. 6 (c)). )). At this time, the lower surface of the locking piece 42 is in contact with the front surface of the member 70, while the upper surface of the locking piece 42 is located slightly away from the back surface of the member 60 (FIG. 6C).
[0028]
When the bolt 72 is further tightened in a state where the lower end of the bulging portion 45 is in contact with the surface of the member 60, a pressing force is applied to the leg piece 41 in a direction in which the square nut 50 and the standing piece 31 side approach the bolt 72 head side. Due to the presence of the bulging portion 45, the pressing force is concentrated above the bulging portion 45, and the deformation promoting portion, which is a portion of the leg 41 that is easily bent, bends to the pressing force, at the position of the fold curve 44 that straddles the opening 23. It is bent (FIG. 7A).
[0029]
When the bolt 72 is further screwed and tightened, the deformation at the folding curve 44 increases, and the leg 41 located in the hole 61 is deformed into an arc shape that protrudes inward (FIG. 7B). ), The legs 41 are completely bent until they contact each other, and the bulging portion 45 is also crushed (FIG. 7C). In this state, the upper surface of the locking piece 42 is also deformed so as to be in contact with the back surface of the member 60, so that the member 60 and the member 70 are securely fixed.
[0030]
Further, regarding the size of the square hole 61, the gap t existing on both sides of the square nut 50 is set to be equal to or less than twice the plate thickness of the leg piece 41, so that the The bolt support 1 is prevented from coming off from the square hole 61 by preventing the flexible bending. That is, if the gap t exceeds twice the plate thickness of the leg piece 41, the leg piece 41 is further bent by tightening the bolt and deformed to a position standing upright with respect to the locking piece 42. There is a case where the leg support 41 is located inside the bolt 61 and the bolt support 1 is pulled out of the hole 61.
[0031]
If the bolt support 1 is used, the insertion of the bolt support 1 and the fixing of the members 60 and 70 to each other by fixing the bolt 72 to the bolt support 1 can be realized only by working from one side of the members. In addition, the members can be easily fixed to each other at locations where work on the back side of the members is difficult.
[0032]
Further, since the locking piece 42 is located between the members 60 and 70 and only the bolt head 72a is visible on the surface of the member 70, a simple design can be realized on the member surface side.
[0033]
Also, the nut support member 30 constituting the bolt support 1 can be formed by pressing and bending a cross-shaped plate, so that the nut support member 30 and the nut support member 30 can be integrally formed, and the structure is simple and easy to manufacture. A bolt support that can be obtained can be obtained.
[0034]
Next, a second example of the embodiment of the bolt support will be described with reference to FIGS.
The bolt support includes a footrest 110 and a nut 130 fixedly connected thereto.
The footrest 110 has a hole 112 in the center of a circular base 111 serving as a top surface, and similarly to the first embodiment shown in FIGS. A leg piece 113 is formed. Each leg 113 is formed at a position facing each other, a locking piece 114 bent outward is formed at the lower end, and both sides of the leg 113 are so formed that the leg 113 can be easily deformed. A notch 115 is formed substantially at the center of the surface. The notch 115 is formed by a cut line including a line 115 a parallel to the base 111 and an inclined line 115 b inclined toward the locking piece 114.
[0035]
A hexagonal nut portion 130 is connected and fixed on the base portion 111 by caulking a lower end portion of the nut portion 130 with respect to the hole portion 112 of the leg base portion 110. A hole 131 is formed in the nut portion 130, and a screw thread 132 is formed on an inner wall of the hole 131.
A pair of claws 116 are formed between the leg pieces 113 so as to be bent so as to protrude from the leg base 110 toward the nut side. The claw 116 has a square shape and a length of about の of the leg piece 113, and its tip is inclined so as to be positioned on a circumference larger than the footrest 110.
In this example, the claw 116 is formed in a square shape, but may be formed in a triangular shape or a wedge shape in which a tip portion becomes thin.
[0036]
FIG. 12 shows a modification of the second example of the above-described bolt support, in which a wall 120 is set up on the side opposite to the nut portion 130 of the leg base 110 so as to surround the periphery of the back surface of the base 111. It is configured to be installed. Due to the presence of the wall portion 120, the strength of the footrest portion 110 can be increased. The claw 116 is formed so as to protrude from the wall 120. Other configurations are the same as those of the bolt support 1 shown in FIGS. 10 and 11, and therefore, the same components are denoted by the same reference numerals and description thereof will be omitted.
[0037]
Next, a case where members are fixed using the bolt support 1 having the above structure will be described with reference to FIG.
The bolt support 1 is inserted into the square hole 61 formed on one of the members 60 from the side of the leg 113 (FIG. 13A), and the nut 130 is positioned on the back side of the member 60 and locked. The piece 114 is arranged so as to contact the surface on the front side of the member 60 (FIG. 13B). In this state, since the claw 116 is located outside the hole 61, the claw 116 is not caught and the bolt support 1 does not drop from the hole 61, and temporary attachment to the back surface of the member can be performed.
[0038]
A bolt 72 is arranged in a bolt hole 71 formed in the other member 70, and the tip of the bolt 72 faces the hole 132 of the nut 130.
When the bolt 72 is screwed into the thread 132 of the nut portion 130 and tightened, the bolt support 1 approaches the bolt 72 and the lower end of the claw 116 contacts the surface of the member 60 (not shown).
[0039]
When the bolt 72 is further tightened while the lower end of the claw 116 is in contact with the surface of the member 60, a pressing force is generated in the leg piece 113 in a direction in which the nut portion 130 approaches the head side of the bolt 72, and the leg piece 113 is bent. The notch 115, which is an easy part, bends to the pressing force, and is bent at this position (cut line 115a).
[0040]
When the bolt 72 is further tightened by screwing, the deformation at the notch portion 115 increases, the leg portion 113 is completely bent until the inner sides thereof contact each other, the claw 116 is also crushed, and the member 60 and the member 70 Secure fixing is performed (FIG. 13C).
FIG. 13C shows a cross section of the leg 113.
[0041]
【The invention's effect】
According to the present invention, by providing the locking claw on the bolt support, when the leg piece is inserted from the surface side into the hole provided in the member, the locking claw is locked by the member It is possible to prevent the bolt support from dropping out of the hole of the member, and it is possible to improve the easiness of handling work in moving (eg, handling in a factory) with the bolt support attached to the member.
[0042]
Further, since the screw thread on which the bolt is screwed is provided on the square nut (nut portion) side, the processing can be easily performed.
[Brief description of the drawings]
FIG. 1 is a perspective explanatory view showing a bolt support according to an example of an embodiment of the present invention.
FIG. 2 is an explanatory plan view showing a developed state before press working of a nut support member constituting the bolt support.
FIGS. 3A and 3B show a nut support member constituting the bolt support, wherein FIG. 3A is a plan view, FIG. 3B is a front view, and FIG. 3C is a side view.
4A and 4B show a square nut, wherein FIG. 4A is a plan view and FIG. 4B is a front view.
FIG. 5 is an explanatory front view of the bolt support, illustrating an inserted state of the square nut.
FIGS. 6A to 6C are cross-sectional views for explaining a deformation process of a bolt support when fixing members.
7 (a) to 7 (c) are cross-sectional explanatory views for explaining a deformation process of the bolt supporter following FIG. 6;
FIG. 8 is an explanatory perspective view of a conventional bolt support.
FIG. 9 is an explanatory sectional view showing a fixed state of a conventional bolt support.
FIG. 10 is a perspective explanatory view showing a bolt support of a second example of the embodiment of the present invention.
11A and 11B show a bolt support, wherein FIG. 11A is a plan view and FIG. 11B is a side view.
FIG. 12 is an explanatory front view showing another example of the bolt support.
13 (a) to 13 (c) are cross-sectional explanatory views for explaining a deformation process of the bolt support when the members are fixed to each other.
[Explanation of symbols]
1. Bolt support,
10: plate piece, 11: short piece (horizontal piece), 14: hole,
21 ... long piece (vertical piece), 23 ... opening,
30: nut support member, 31: standing piece, 32: support piece, 33: claw portion,
41: leg piece, 42: locking piece, 44: folding curve, 45: bulging part,
50: square nut, 52: hole, 53: screw thread,
60 ... member, 61 ... hole,
70: member, 71: bolt hole, 72: bolt,
110 ... leg stand, 111 ... stand,
113: leg piece, 114: locking piece, 115: notch, 116: claw,
130: nut part, 131: hole part, 132: screw thread

Claims

The leg piece is deformed by inserting the leg piece from the front side into the hole provided in the member, and screwing a bolt from the front side to the nut attached to the leg side located on the back side of the member. A bolt support that is fixed to the member by
A bolt provided with a locking claw that locks to the back surface of the member when the bolt support is inserted into the hole to prevent the bolt support from dropping out of the hole. Support.

The bolt support according to claim 1, wherein the locking claw is provided on a leg piece.

A hole is formed at the intersection center of the cross-shaped plate where the vertical piece and the horizontal piece intersect, and the outside of the intersection center of the horizontal piece is bent to face each other to form a pair of standing pieces, and the vertical piece is formed. The cross center outside is bent to the opposite side of the pair of standing pieces so as to face each other to form a pair of leg pieces, and the tip of each leg piece is bent outward to provide a locking piece. A nut support member comprising: an opening formed in the leg and a folding curve provided so as to straddle the opening; a deformation accelerating portion; and a locking claw bulging outward below the opening of the leg.
A bolt-shaped support, comprising: a square nut in which a hole corresponding to the hole is formed so as to be fitted to a portion of the nut support member sandwiched by the pair of standing pieces.

4. The bolt support according to claim 3, wherein support pieces bent inside are provided on both side surfaces of the standing piece.

The bolt support according to claim 3, further comprising a claw portion formed by cutting and raising the inner wall of the standing piece downward.

It has a leg base having a hole in the center of the base and having a deformable leg, and a nut connected and fixed to the base,
The tip of each leg is bent outward to form a locking piece,
A bolt support, wherein a claw is formed on a leg base portion located between the leg pieces so as to protrude toward a side opposite to the nut portion.