JP3732402B2

JP3732402B2 - Branch tension tool

Info

Publication number: JP3732402B2
Application number: JP2000378375A
Authority: JP
Inventors: 至大滝; 登山嵜
Original assignee: 有限会社水島工芸社
Priority date: 2000-12-13
Filing date: 2000-12-13
Publication date: 2006-01-05
Anticipated expiration: 2020-12-13
Also published as: JP2002181137A

Description

【０００１】
【発明の属する技術分野】
本発明は、テレビアンテナ（以下、単にアンテナという）等の屋外設備物を支持する支線に引張力を与えるための支線引張具に関する。
【０００２】
【背景技術】
本出願人は、特願２０００−２８０５２８号及び特願２０００−３１９６０４号により、屋根に設置されるアンテナのマストを支持するための支線に引張力を付与し、複数の支線によってこのマストを立設できるようにした支線引張具を提供した。この支線引張具は、アンテナのマストを支持する支線に引張力を与えるためにこの支線を巻き取る軸体と、この軸体の巻き取り方向とは逆方向への回転を規制する逆回転規制手段とを備えている。
【０００３】
それぞれの支線ごとに設けられるこの支線引張具では、軸体を巻き取り方向に回転操作すると、支線が軸体に巻き取られるため、支線に引張力が付与され、軸体の回転を停止させると、軸体が支線の引張力によって巻き取り方向とは逆方向へ回転しようとしても、逆回転規制手段によって軸体の逆回転は阻止されるため、支線は付与された上記引張力を維持することになる。
【０００４】
【発明が解決しようとする課題】
この従来の支線引張具によると、軸体が巻き取り方向とは逆方向へ回転してしまうのを逆回転規制手段で阻止しているため、軸体の巻き取り方向への回転操作で支線に付与された引張力をその後は小さくすることはできない。
【０００５】
しかし、アンテナのマストは複数の支線で支持され、それぞれの支線に支線引張具が使用されるため、アンテナを正確な所定の方向に向けて立設するためには、それぞれの支線の引張力を調整する作業を行いながら、アンテナのマストの立設作業を行うことが必要である。
【０００６】
上記従来の支線引張具では、軸体を巻き取り方向とは逆方向へ回転させることができないため、支線に一旦付与した引張力を小さくすることはできず、このため、引張力の調整作業を行うことができなかった。
【０００７】
本発明の目的は、引張力の調整作業を行えるようになる支線引張具を提供するところにある。
【０００８】
【課題を解決するための手段】
本発明に係る支線引張具は、アンテナ等の屋外設備物を支持する支線に引張力を与えるためにこの支線を巻き取る軸体と、この軸体の巻き取り方向とは逆方向への回転を規制する逆回転規制手段とを備えている支線引張具において、前記軸体を前記巻き取り方向とは逆方向へ回転させるための逆回転手段を備えていることを特徴とするものである。
【０００９】
この支線引張具によると、軸体が巻き取り方向とは逆方向へ回転するのを規制する逆回転規制手段を備えていても、軸体を巻き取り方向とは逆方向へ回転させるための逆回転手段も備えているため、この逆回転手段によって軸体を巻き取り方向とは逆方向へ回転させることより、軸体から支線を巻き戻すことができる。このため、軸体への巻き取りで支線に付与された引張力を巻き戻しによって小さくすることも可能になり、軸体の巻き取り方向への回転とその逆方向への回転とにより、支線の引張力を調整することができる。
【００１０】
以上の本発明において、逆回転手段は、軸体と逆回転規制手段とを一体にして巻き取り方向とは逆方向へ回転させるものでもよく、あるいは、逆回転規制手段自在の機能を解除させ、これにより軸体を巻き取り方向とは逆方向へ回転させるものでもよく、任意な形式、構造等のものとすることができる。
【００１１】
逆回転手段を、軸体と逆回転規制手段とを一体にして巻き取り方向とは逆方向へ回転させるものとする場合の一例は、支線引張具本体に、軸体を中心に回転自在であってこの支線引張具本体に対し係脱手段で係脱自在となった回転部材を設けるとともに、軸体にはクラッチ部を設け、回転部材には、このクラッチ部と係合し、かつ軸体の巻き取り方向への回転を許容して巻き取り方向とは逆方向への回転を阻止する突起を形成し、逆回転規制手段を、これらのクラッチ部と突起とを含んで構成されたものとし、逆回転手段を、回転部材と係脱手段とを含んで構成されたものとすることである。
【００１２】
回転部材を係脱手段で支線引張具本体と一体化した状態で、軸体を巻き取り方向へ回転させると、軸体に支線が巻き取られて支線に引張力が発生し、その回転位置で軸体を停止させると、クラッチ部と突起との係合により軸体が巻き取り方向とは逆方向へ回転することは規制される。そして、係脱手段を操作することによって回転部材を支線引張具本体に対して自由状態とし、これにより、この回転部材を軸体を中心に回転自在とすると、軸体への巻き取りで引張力が付与されていた支線のこの引張力により、回転部材に設けられている突起とクラッチ部とで巻き取り方向とは逆方向への回転を規制されていた軸体は、巻き取り方向とは逆方向へ回転することになる。この結果、軸体に巻き取られていた支線は巻き戻され、引張力は小さくなる。
【００１３】
このため、回転部材と係脱手段を含んで構成された逆回転手段は、軸体と、クラッチ部及び突起を含んで構成された逆回転規制手段とを一体化して巻き取り方向とは逆方向へ回転させるものとなっている。
【００１４】
以上において、軸体の回転操作のために、この軸体にレンチ等の工具を係合できる係合部を設けることにより、工具で軸体を回転操作できるようにしてもよく、あるいは、軸体に手で触るレバー等の手動操作部を設けることにより、手動操作で軸体を回転操作できるようにしてよい。
【００１５】
また、支線引張具本体に対して回転部材を係脱自在とするための係脱手段は、締め付け緩め操作されるねじを用いたものでもよく、あるいは、支線引張具本体に対してスライド自在で、このスライドで回転部材に対して係合、離脱するスライド部材を用いたものでもよく、さらには、支線引張具本体と回転部材とに対して抜き差しされる挿抜部材を用いたものでもよく、さらにまた、これらのうち少なくとも２つを複合したものでもよく、任意である。要するに、係脱手段は、支線引張具本体に対する回転部材の軸体を中心とした回転可能と回転不能とを切り換えることができるようになっていればよい。
【００１６】
以上の本発明に係る支線引張具は、アンテナのマストを支持するための支線に引張力を付与するために用いることができ、また、この支線引張具は、屋根に設置される温水器を支持するための支線や、電柱等の路上物に広告物等の被取付物を取り付けための支線に引張力を付与するためにも用いることができ、その用途は任意である。
【００１７】
また、支線はワイヤー等のように線状物又は複数の線状物を撚ったものでもよく、帯状のものでもよく、その形態、形状等は任意である。
【００１８】
【発明の実施の形態】
以下に本発明の実施形態を図面に基づいて説明する。図１は、本実施形態に係る支線引張具によって引張力が付与された支線でアンテナのマストが支持されている状態を示す図である。アンテナ１のマスト２は、建物３の屋根３Ａに載せられた屋根馬と称される基台４に立設され、このマスト２には上下に分かれて２個の止め具５，６が取り付けられている。上側の止め具５には、途中部が折返具７で折り返されたアンテナ支線８の一端が止着されているとともに、下側の止め具６にはアンテナ支線８の他端が本実施形態に係る支線引張具２０を介して止着されている。上下の止め具５，６には孔５Ａ，６Ａが形成されており、孔５Ａにアンテナ支線８の一端が、孔６Ａに支線引張具２０の端部がそれぞれ挿入止着されている。
【００１９】
折返具７は、建物３に打ち込まれたアンカ部材９と、線状部材１０と、折返補助体１１とからなり、線状部材１０の一端のループ部１０Ａにアンカ部材９が結合され、他端のループ部１０Ｂに折返補助体１１が回転自在に取り付けられ、アンテナ支線８の途中部は、ローラからなるこの折返補助体１１に掛け回されて折返されている。
【００２０】
このような折返具７を用いてアンテナ支線８は複数本、例えば、マスト２の周囲の四方に４本張設される。
【００２１】
図２は、本実施形態に係る支線引張具２０の全体を示す斜視図であり、図３は、その支線引張具２０の分解斜視図である。支線引張具２０は、本体２１と、この本体２１に回転自在に取り付けられた軸体２２と、本体２１の内部で軸体２２の外周に回転自在に嵌合されたリール２３と、本体２１の側部で軸体２２を中心に回転自在に配置された回転部材２４と、この回転部材２４を本体２１に対して係脱自在、すなわち本体２１に対して一体化、非一体化するための係脱手段２５とを含んで構成されている。
【００２２】
図３で示すように、本体２１は、左右の側板２１Ａ，２１Ｂを有し、これらの側板２１Ａ、２１Ｂは途中部の上面から上面板２１Ｃで連結され、側板２１Ａ，２１Ｂの下面は開口している。側板２１Ａ、２１Ｂの上面板２１Ｃで連結されていない端部には孔２６が形成され、これらの端部とは反対側の本体２１の端部は、側板２１Ａ，２１Ｂと上面板２１Ｃとにより幅狭に形成されたフック部２１Ｄとなっており、このフック部２１Ｄが図１で示した止め具６の孔６Ａに挿入される。フック部２１Ｄには、図３で示すように、孔６Ａからのフック部２１Ｄの抜け出しを防止するためのねじによる抜け止め部材２７が設けられている。
【００２３】
軸体２２は、一端にレンチ等の工具が係合される係合部２２Ａを有しているとともに、この係合部２２Ａに、板金の打ち抜きで形成されたクラッチ部２２Ｂが結合一体化されている。このクラッチ部２２Ｂには、偶数個の凹部２８Ａが円周方向に等間隔で形成され、凹部２８Ａの間は凸部２８Ｂとなっている。軸体２２の軸方向中央部付近には直径方向に貫通する孔２９が形成されており、また、軸体２２の係合部２２Ａとは反対側の端部には、図３の係止部材３０を係止するための溝２２Ｃが形成されている。
【００２４】
また、図３に示すように、リール２３は、軸体２２が挿入される筒部２３Ａと、この筒部２３Ａの両端に設けられたフランジ部２３Ｂとからなり、筒部２３Ａには円周方向に長い長孔３１が形成されている。この長孔３１は、図４に示すとおり、筒部２３Ａの直径方向に２個設けられている。リール２３の軸方向長さは、本体２１の側板２１Ａと２１Ｂとの間隔よりも小さく、このため、リール２３がこれらの側板２１Ａ，２１Ｂの間に挿入されても、側板２１Ｂが本体２１の内側へ撓むことができるようになっている。
【００２５】
また、回転部材２４の端部には孔３２が形成され、他方の端部には凹部３３が形成されている。
【００２６】
係脱手段２５は、本体２１における回転部材２４側の側板２１Ｂに形成された長孔３４と、この長孔３４にスライド自在に挿入された小ねじ３５と、本体２１の内部に突出したこの小ねじ３５の先端に螺合された四角ナット３６とを含んで構成され、このナット３６は本体２１の上面板２１Ｃの裏面に当接しているため、小ねじ３５の頭部をドライバで回転操作することにより、小ねじ２６を締め付けたり緩めたりすることができる。また、小ねじ３５を緩めたときには、長孔３４に沿った小ねじ３５のスライドにより、回転部材２４の凹部３３に対して小ねじ３５の軸部を挿抜することができる。
【００２７】
回転部材２４における本体２１とは反対側の面には、孔３２の周囲において２個の突起３７が形成され、また、本体２１の側板２１Ｂにおける回転部材２４側の面にも、孔２６に周囲において２個の突起３８が形成されている。これらの突起３７，３８は板金の押し出し成形で形成されているため、突出側とは反対側の裏面は窪んでいる。また、回転部材２４の孔３２と側板２１Ｂの孔２６とを一致させて回転部材２４の凹部３３に小ねじ３５の軸部を挿入できるようにしたときには、図６に示すように、これらの突起３７，３８の位置も一致し、突起３８は突起３７の裏面の窪み部に入り込むようになっている。
【００２８】
また、軸体２２を回転部材２４の孔３２と本体２１の両方の側板２１Ａ，２１Ｂの孔２６とに挿入し、軸体２２を適度な回転角度まで回転させたときには、図６に示すように、この軸体２２に設けられているクラッチ部２２Ｂの凹部２８Ａが突起３７の位置と一致するようになっている。
【００２９】
図６等で示している矢印Ａは、アンテナ支線８を巻き取るときの軸体２２の回転方向である。回転部材２４の突起３７は、巻き取り方向Ａにおける突出面３７Ａがクラッチ部２２Ｂ側へ直角又はほぼ直角に起立し、この突出面３７Ａの先端から巻き取り方向Ａとは反対側へ直線的に延びる面３７Ｂが本体２１の側板２１Ｂへ次第に近づく傾斜面、言い替えると、巻き取り方向Ａとは反対側への下り傾斜面となっている。したがって、突起３７は、突出面３７Ａと傾斜面３７Ｂを有する三角の突出形状である。
【００３０】
一方、本体２１の側板２１Ｂの突起３８は、巻き取り方向Ａとこれとは反対方向との両方において回転部材２４側へなだらかに突出した半楕円形の形状となっている。
【００３１】
支線引張具２０を組み立てるときは、軸体２２を回転部材２４の孔３２に挿入してから本体２１の側板２１Ｂの孔２６に挿入し、この孔２６から突出した軸体２２の外周にリール２３を嵌合した後、軸体２２を本体２１の側板２１Ａの孔２６に挿入し、この孔２６から突出した軸体２２の溝２２Ｃに係止部材３０を係止する。これにより、軸体２２は係止部材３０で本体２１に対して抜け止めされる。
【００３２】
そして、係脱手段２５の小ねじ３５を長孔３４に沿ってスライドさせることにより、小ねじ３５の軸部を回転部材２４の凹部３３に挿入し、小ねじ３５を締め付ける。これにより、軸体２２を中心に回転自在となっていた回転部材２４は、係脱手段２５で本体２１と一体化される。
【００３３】
このときには、図６で示すように、本体２１の側板２１Ｂに設けられている突起３８は、回転部材２４の突起３７の裏面の窪み部に入り込んでいる。また、このときには、軸体２２に設けたクラッチ部２２Ｂの凹部２８Ａを突起３７の位置と一致させておく。
【００３４】
以上の支線引張具２０をアンテナマストの立設現場に運ぶときには、軸体２２の孔２９とリール２３の長孔３１との位置を一致させ、これらの孔２９，３１にプラスチック等からなる細長ピン状部材を挿入しておき、これによって孔２９と３１の位置を一致させた状態で支線引張具２０をアンテナマストの立設現場に運ぶ。
【００３５】
図１で示したアンテナマストの立設現場では、アンテナ支線８の一端をマスト２の止め具５の孔５Ａに挿入止着するとともに、支線引張具２０の端部のフック部２１Ｄを止め具６の孔６Ａに挿入止着し、途中部が折返具７で折返されたアンテナ支線８の他端を支線引張具２０の軸体２２で巻き取る作業を行う。
【００３６】
この巻き取り作業は、図４に示すように、先ずアンテナ支線８を軸体２２の孔２９とリール２３の長孔３１に挿入することから始める。この挿入作業は、孔２９と３１の位置を一致させるためにこれらの孔に挿入されていた前記細長ピン状部材をアンテナ支線８で押し出しながら行い、止め具５の孔５Ａに一端が挿入止着されたアンテナ支線８の支線引張具２０までの長さが適正量となるまでアンテナ支線を孔２９，３１に挿入した後、孔２９，３１から突出しているアンテナ支線８の余り部分を切断除去する。この状態が図４に示されている。
【００３７】
次いで、軸体２２を係合部２２Ａに係合させたレンチ等の工具によって巻き取り方向Ａへ回転させる。この回転操作を行うと、図４に示されているように、軸体２２とリール２３に筒部２３Ａとの間には隙間があり、リール２３の長孔３１はリール２３の円周方向に長いため、図５で示すとおり、初めに軸体２２がＡ方向へ回転し、これにより、アンテナ支線８は、軸体２２とリール２３の筒部２３Ａとの間の隙間に入り込んで軸体２２とリール２３とで挟着された状態となる。
【００３８】
このため、軸体２２を回転させる初期において、アンテナ支線８が孔２９，３１から抜け落ちるのを防止することができる。
【００３９】
これ以後、軸体２２をＡ方向へ継続させて回転させることにより、リール２３はアンテナ支線８との摩擦力で軸体２２と一体に回転し、アンテナ支線８は軸体２２の外周のリール２３に巻き取られることになる。
【００４０】
なお、リール２３に設ける長孔３１は直径方向の２箇所に設けるうちのアンテナ支線８を差し込む側の一方だけとし、他方を単なる丸孔としてもよいが、本実施形態にように、両方を長孔とすることにより、アンテナ支線８を差し込む長孔をどちらの長孔とすることもできるという利点を得られる。
【００４１】
以上のように、軸体２２を巻き取り方向Ａへ回転させるときは、係脱手段２５で本体２１と一体化されている回転部材２４の突起３７は、巻き取り方向Ａとは反対側への下り傾斜面３７Ｂを有するものとなっているため、軸体２２のクラッチ部２２Ｂにおける凹部２８Ａ同士の間の凸部２８Ｂは、図７に示すように、この傾斜面３７Ｂに乗り上げる。これにより、回転部材２４及び本体２１の側板２１Ｂは本体２１の内側へ弾性的に撓み変形し、この結果、凸部２８Ｂは突起３７を通過することができ、軸体２２はＡ方向への回転が許容されてこの方向へ軸体２２を継続回転させることができる。これにより、アンテナ支線８に適度な引張力を付与することができる。
【００４２】
そして、軸体２２の回転操作を停止させたときには、軸体２２はアンテナ支線８の引張力でＡ方向とは逆方向へ回転しようとするが、このときには、クラッチ部２２Ｂの凸部２８Ｂが突起３７の突出面３７Ａに係合し、軸体２２のＡ方向とは逆方向への回転が阻止される。
【００４３】
このため、軸体２２のＡ方向とは逆方向への回転を規制するための逆回転規制手段Ｂが、クラッチ部２２Ｂと突起３７により構成されている。
【００４４】
以上の支線引張具２０によるアンテナ支線８の巻き取り作業は、それぞれのアンテナ支線８について行われ、これによってそれぞれのアンテナ支線８に適正な引張力を生じさせるが、アンテナ１を所定の向きにするために、あるアンテナ支線８の引張力を小さくする作業を行うことが必要になったときには、そのアンテナ支線８の支線引張具２０における回転部材２４を本体２１に対して自由状態とするために、先ず、その支線引張具２０における係脱手段２５の小ねじ３５を緩め、次いでこの小ねじ３５を長孔３４に沿ってスライドさせ、これにより、小ねじ３５を回転部材２４の凹部３３から離脱させる。
【００４５】
この結果、回転部材２４は軸体２２を中心に回転可能となり、アンテナ支線８に生じている引張力でリール２３及び軸体２２がＡ方向とは逆方向へ回転しようとし、クラッチ部２２Ｂの凸部２８Ｂで突起３７が押されることによって回転部材２４がＡ方向とは逆方向へ回転することにより、軸体２２及びリール２３も同じ方向へ回転する。これにより、アンテナ支線８の巻き戻しがなされ、その引張力が小さくなる。
【００４６】
このように引張力の大きさが変更され、アンテナ１の向きが所定の向きとなってときには、係脱手段２５の小ねじ３５をスライドさせて回転部材２４の凹部３３に挿入し、小ねじ３５の締め付けで回転部材２４を本体２１と一体化し、回転部材２４を軸体２２を中心に回転不能の状態に戻す。
【００４７】
以上のように、本実施形態では、回転部材２４と、この回転部材２４を本体２１に係脱自在、すなわち、回転部材を本体２１に対して一体化、非一体化とするための係脱手段２５とにより、軸体２２をＡ方向とは逆方向へ回転させるための逆回転手段Ｃが構成されている。そして、この逆回転手段Ｃは、逆回転規制手段Ｂを構成しているクラッチ部２２Ｂと回転部材２４の突起３７とを、軸体２２と共にＡ方向とは逆方向へ回転させるものになっているため、逆回転手段Ｃにより、逆回転規制手段Ｂと軸体２２は一体になってＡ方向とは逆方向に回転する。
【００４８】
以上の本実施形態において、回転部材２４がＡ方向とは逆方向へ回転するときには、回転部材２４の突起３７は、本体２１の側板２１Ｂが本体２１の内外方向へ弾性的に撓み変形することにより、この側板２１Ｂの半楕円形の突起３８に係合、離脱することを繰り返し、言い替えると、回転部材２４は節度的に回転する。このため、回転部材２４に設けた指触り部２４Ａを触って回転部材２４を回転抑制しながら回転させることにより、アンテナ支線８の引張力の変更を確認しながら回転部材２４を回転させることができ、また、係脱手段２５で回転部材２５を本体２１と一体化できる回転位置を容易に確認できる。
【００４９】
以上説明した本実施形態では、逆回転規制手段Ｂ及び逆回転手段Ｃは、本体２１の一方の側部のみに設けたが、これらを本体２１の両方の側部に設けてもよい。
【００５０】
また、図２の二点鎖線２１Ｃ’で示すように、本体２１の上面板２１Ｃにおける軸体２２側の端部をリール２３の近いまで延設し、これにより、リール２３に巻き取られるアンテナ支線８の脱落防止を図るようにしてもよい。
【００５１】
【発明の効果】
本発明によると、逆回転規制手段で巻き取り方向とは反対側へ軸体の回転を規制しても、逆回転手段によって軸体を巻き取り方向とは反対側へ回転させることができるようになり、このため、軸体に巻き取られた支線の引張力を小さく変更することが可能になり、引張力の調整作業を行える。
【図面の簡単な説明】
【図１】建物の屋根に立設されたアンテナのマストを本発明の一実施形態に係る支線引張具で引張力が付与されたアンテナ支線によって支持した状態を示す図である。
【図２】図１で示されている支線引張具の全体を示す斜視図である。
【図３】図２の支線引張具の分解斜視図である。
【図４】アンテナ支線を軸体の孔及びリールの孔に挿入したときを示す断面図である。
【図５】図４の状態から軸体を巻き取り方向へ回転させたときを示す断面図である。
【図６】逆回転規制手段を構成する軸体のクラッチ部と回転部材の突起との位置関係を示す断面図である。
【図７】図６の状態から支線を巻き取るために軸体を回転させたときを示す断面図である。
【符号の説明】
１アンテナ
２マスト
５，６止め具
７折返具
８アンテナ支線
２０支線引張具
２１支線引張具の本体
２２軸体
２２Ｂクラッチ部
２３リール
２４回転部材
２５係脱手段
３７，３８突起
Ａ巻き取り方向
Ｂ逆回転規制手段
Ｃ逆回転手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a branch line tension tool for applying a tensile force to a branch line that supports an outdoor facility such as a television antenna (hereinafter simply referred to as an antenna).
[0002]
[Background]
According to Japanese Patent Application No. 2000-280528 and Japanese Patent Application No. 2000-319604, the applicant gives a tensile force to the branch line for supporting the antenna mast installed on the roof, and this mast is erected by a plurality of branch lines. A branch line tensioning tool that can be used is provided. The branch line tensioning tool includes a shaft body that winds up the branch line in order to apply a tensile force to the branch line that supports the mast of the antenna, and a reverse rotation restricting means that regulates the rotation of the shaft body in a direction opposite to the winding direction. And.
[0003]
In this branch line tension tool provided for each branch line, when the shaft body is rotated in the winding direction, the branch line is wound around the shaft body, so that a tensile force is applied to the branch line and rotation of the shaft body is stopped. Even if the shaft body tries to rotate in the direction opposite to the winding direction due to the tensile force of the branch line, the reverse rotation restricting means prevents the shaft body from rotating backward, so that the branch line maintains the applied tensile force. become.
[0004]
[Problems to be solved by the invention]
According to this conventional branch wire pulling tool, the shaft body is prevented from rotating in the direction opposite to the winding direction by the reverse rotation restricting means. The applied tensile force cannot be reduced thereafter.
[0005]
However, since the antenna mast is supported by a plurality of branch lines, and a branch line tensioner is used for each branch line, in order to stand the antenna in an accurate predetermined direction, the tensile force of each branch line must be set. While performing the adjustment work, it is necessary to perform the mast standing work of the antenna.
[0006]
In the conventional branch line tension tool described above, the shaft body cannot be rotated in the direction opposite to the winding direction, so the tensile force once applied to the branch line cannot be reduced. Could not do.
[0007]
An object of the present invention is to provide a branch line tension tool that can perform an adjustment operation of a tensile force.
[0008]
[Means for Solving the Problems]
The branch wire tensioning tool according to the present invention includes a shaft body that winds up the branch line to give a tensile force to a branch line that supports an outdoor facility such as an antenna, and rotation in a direction opposite to the winding direction of the shaft body. A branch line tensioning tool provided with a reverse rotation restricting means for restricting is provided with reverse rotating means for rotating the shaft body in a direction opposite to the winding direction.
[0009]
According to this branch line tensioning tool, even if the shaft body is provided with a reverse rotation restricting means for restricting the shaft body from rotating in the direction opposite to the winding direction, the shaft body is reversely rotated to rotate in the direction opposite to the winding direction. Since the rotating means is also provided, the branch line can be rewound from the shaft body by rotating the shaft body in the direction opposite to the winding direction by the reverse rotating means. For this reason, it is possible to reduce the tensile force applied to the branch line by rewinding the shaft body by unwinding, and by rotating the shaft body in the winding direction and in the opposite direction, The tensile force can be adjusted.
[0010]
In the above invention, the reverse rotation means may be one in which the shaft body and the reverse rotation restricting means are integrated and rotated in the direction opposite to the winding direction, or the reverse rotation restricting means free function is canceled, Thereby, the shaft body may be rotated in the direction opposite to the winding direction, and can be of any type, structure, or the like.
[0011]
An example of a case in which the reverse rotation means is rotated in the direction opposite to the winding direction by integrating the shaft body and the reverse rotation restricting means is to be rotatable about the shaft body on the branch tensioner body. A rotating member that can be freely engaged and disengaged by an engaging / disengaging means is provided to the branch tensioner main body, and a shaft portion is provided with a clutch portion. The rotating member is engaged with the clutch portion, and the shaft body A protrusion that allows rotation in the winding direction and prevents rotation in the direction opposite to the winding direction is formed, and the reverse rotation restricting means is configured to include these clutch portions and protrusions, The reverse rotation means includes a rotation member and an engagement / disengagement means.
[0012]
When the shaft is rotated in the winding direction in a state where the rotating member is integrated with the branch tensioner main body by the engagement / disengagement means, the branch is wound around the shaft and a tensile force is generated on the branch. When the shaft body is stopped, the rotation of the shaft body in the direction opposite to the winding direction is restricted by the engagement between the clutch portion and the protrusion. Then, by operating the engagement / disengagement means, the rotating member is brought into a free state with respect to the branch line tensioner main body, and when this rotating member is rotatable about the shaft body, the tensile force is taken up by winding around the shaft body. The shaft body whose rotation in the direction opposite to the winding direction is restricted by the projection provided on the rotating member and the clutch portion by the tensile force of the branch line to which the rotation is applied is opposite to the winding direction. Will rotate in the direction. As a result, the branch line wound around the shaft body is rewound and the tensile force is reduced.
[0013]
For this reason, the reverse rotation means configured to include the rotation member and the engagement / disengagement means integrates the shaft body and the reverse rotation restriction means configured to include the clutch portion and the protrusion to reverse the winding direction. It is intended to rotate.
[0014]
In the above, for the rotation operation of the shaft body, the shaft body may be rotated by the tool by providing an engagement portion that can engage a tool such as a wrench to the shaft body. A manual operation unit such as a lever that is touched by a hand may be provided so that the shaft body can be rotated manually.
[0015]
Further, the engaging / disengaging means for making the rotating member engageable / detachable with respect to the branch line tensioner main body may be one using a screw that is tightened and loosened, or is slidable relative to the branch line tensioner main body, A slide member that engages and disengages from the rotating member by this slide may be used, and further, an inserting / extracting member that is inserted into and removed from the branch tensioner main body and the rotating member may be used. , And a combination of at least two of these may be used. In short, the engaging / disengaging means only needs to be able to switch between rotatable and non-rotatable around the shaft of the rotating member with respect to the branch line tensioner body.
[0016]
The branch line tension tool according to the present invention can be used to apply a tensile force to the branch line for supporting the antenna mast, and the branch line tension tool supports a water heater installed on the roof. It can also be used to apply a tensile force to a branch line for attaching to-be-attached objects such as advertisements to road lines such as utility poles, and its use is arbitrary.
[0017]
Further, the branch line may be a linear object or a plurality of linear objects such as a wire, or may be a belt-like one, and its form, shape, etc. are arbitrary.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a state in which an antenna mast is supported by a branch line to which a tensile force is applied by the branch line tension tool according to the present embodiment. The mast 2 of the antenna 1 is erected on a base 4 called a roof horse mounted on the roof 3A of the building 3, and the mast 2 is divided into upper and lower parts and two stoppers 5 and 6 are attached. ing. One end of an antenna branch line 8 whose middle portion is folded back by a folding tool 7 is fixed to the upper stopper 5, and the other end of the antenna branch line 8 is fixed to the lower stopper 6 in this embodiment. It is fixed via the branch line tension tool 20 concerned. Holes 5A and 6A are formed in the upper and lower stoppers 5 and 6, and one end of the antenna branch line 8 is inserted into the hole 5A and the end of the branch line tensioner 20 is inserted and fixed to the hole 6A.
[0019]
The folding tool 7 includes an anchor member 9 driven into the building 3, a linear member 10, and a folding assisting body 11. The anchor member 9 is coupled to the loop portion 10 A at one end of the linear member 10, and the other end. The loop assisting body 11 is rotatably attached to the loop portion 10B, and the middle portion of the antenna branch line 8 is looped around the folding assisting body 11 made of a roller.
[0020]
A plurality of antenna branch lines 8, for example, four in four directions around the mast 2 are stretched using such a folding tool 7.
[0021]
FIG. 2 is a perspective view showing the entire branch line tension tool 20 according to this embodiment, and FIG. 3 is an exploded perspective view of the branch line tension tool 20. The branch wire pulling tool 20 includes a main body 21, a shaft body 22 rotatably attached to the main body 21, a reel 23 rotatably fitted on the outer periphery of the shaft body 22 inside the main body 21, A rotating member 24 that is rotatably arranged around the shaft body 22 at the side, and a member for engaging and disengaging the rotating member 24 with respect to the main body 21, that is, for integrating and non-integrating with the main body 21. And a removal means 25.
[0022]
As shown in FIG. 3, the main body 21 has left and right side plates 21A, 21B. These side plates 21A, 21B are connected by an upper surface plate 21C from the upper surface in the middle, and the lower surfaces of the side plates 21A, 21B are opened. Yes. Holes 26 are formed in the end portions of the side plates 21A and 21B that are not connected by the upper surface plate 21C, and the end portion of the main body 21 opposite to these end portions is widened by the side plates 21A and 21B and the upper surface plate 21C. The hook portion 21D is formed narrowly, and this hook portion 21D is inserted into the hole 6A of the stopper 6 shown in FIG. As shown in FIG. 3, the hook portion 21 D is provided with a retaining member 27 using a screw for preventing the hook portion 21 D from coming out of the hole 6 A.
[0023]
The shaft body 22 has an engaging portion 22A with which a tool such as a wrench is engaged at one end, and a clutch portion 22B formed by punching a sheet metal is coupled and integrated with the engaging portion 22A. Yes. In the clutch portion 22B, an even number of concave portions 28A are formed at equal intervals in the circumferential direction, and convex portions 28B are formed between the concave portions 28A. A hole 29 penetrating in the diameter direction is formed in the vicinity of the central portion of the shaft body 22 in the axial direction, and the locking member of FIG. 3 is formed at the end of the shaft body 22 opposite to the engaging portion 22A. A groove 22 C for locking 30 is formed.
[0024]
As shown in FIG. 3, the reel 23 includes a cylindrical portion 23A into which the shaft body 22 is inserted, and flange portions 23B provided at both ends of the cylindrical portion 23A. The cylindrical portion 23A has a circumferential direction. A long slot 31 is formed. As shown in FIG. 4, two long holes 31 are provided in the diameter direction of the cylindrical portion 23 A. The axial length of the reel 23 is smaller than the distance between the side plates 21A and 21B of the main body 21. Therefore, even if the reel 23 is inserted between the side plates 21A and 21B, the side plate 21B is located inside the main body 21. Can be bent.
[0025]
A hole 32 is formed at the end of the rotating member 24, and a recess 33 is formed at the other end.
[0026]
The engaging / disengaging means 25 includes a long hole 34 formed in the side plate 21B on the rotating member 24 side of the main body 21, a small screw 35 slidably inserted into the long hole 34, and a small screw protruding into the main body 21. Since the nut 36 is in contact with the back surface of the upper surface plate 21C of the main body 21, the head of the small screw 35 is rotated with a screwdriver. Thus, the machine screw 26 can be tightened or loosened. When the machine screw 35 is loosened, the shaft part of the machine screw 35 can be inserted into and removed from the recess 33 of the rotating member 24 by sliding the machine screw 35 along the elongated hole 34.
[0027]
Two protrusions 37 are formed around the hole 32 on the surface of the rotating member 24 opposite to the main body 21, and the surface on the rotating member 24 side of the side plate 21 B of the main body 21 also surrounds the hole 26. Two protrusions 38 are formed. Since these protrusions 37 and 38 are formed by extruding a sheet metal, the back surface opposite to the protruding side is recessed. Further, when the hole 32 of the rotating member 24 and the hole 26 of the side plate 21B are aligned with each other so that the shaft portion of the machine screw 35 can be inserted into the concave portion 33 of the rotating member 24, as shown in FIG. The positions of the protrusions 37 and 38 are also coincident with each other, and the protrusion 38 enters the recessed portion on the back surface of the protrusion 37.
[0028]
Further, when the shaft body 22 is inserted into the hole 32 of the rotating member 24 and the holes 26 of both the side plates 21A and 21B of the main body 21, and the shaft body 22 is rotated to an appropriate rotation angle, as shown in FIG. The concave portion 28 A of the clutch portion 22 B provided on the shaft body 22 coincides with the position of the protrusion 37.
[0029]
An arrow A shown in FIG. 6 and the like is a rotation direction of the shaft body 22 when the antenna branch line 8 is wound up. The protrusion 37 of the rotating member 24 has a protruding surface 37A in the winding direction A standing upright or almost at right angles to the clutch portion 22B side, and linearly extends from the tip of the protruding surface 37A to the side opposite to the winding direction A. The surface 37B is an inclined surface that gradually approaches the side plate 21B of the main body 21, in other words, a downward inclined surface toward the side opposite to the winding direction A. Accordingly, the protrusion 37 has a triangular protruding shape having a protruding surface 37A and an inclined surface 37B.
[0030]
On the other hand, the protrusion 38 of the side plate 21B of the main body 21 has a semi-elliptical shape that gently protrudes toward the rotating member 24 in both the winding direction A and the opposite direction.
[0031]
When assembling the branch line tension tool 20, the shaft body 22 is inserted into the hole 32 of the rotating member 24, and then inserted into the hole 26 of the side plate 21 B of the main body 21. Then, the shaft body 22 is inserted into the hole 26 of the side plate 21 A of the main body 21, and the locking member 30 is locked in the groove 22 C of the shaft body 22 protruding from the hole 26. Accordingly, the shaft body 22 is prevented from being detached from the main body 21 by the locking member 30.
[0032]
Then, by sliding the small screw 35 of the engaging / disengaging means 25 along the long hole 34, the shaft portion of the small screw 35 is inserted into the recess 33 of the rotating member 24, and the small screw 35 is tightened. Thus, the rotating member 24 that is rotatable about the shaft body 22 is integrated with the main body 21 by the engagement / disengagement means 25.
[0033]
At this time, as shown in FIG. 6, the protrusion 38 provided on the side plate 21 B of the main body 21 enters a recess on the back surface of the protrusion 37 of the rotating member 24. At this time, the concave portion 28 A of the clutch portion 22 B provided on the shaft body 22 is made to coincide with the position of the protrusion 37.
[0034]
When the above branch line tensioning tool 20 is carried to the site where the antenna mast is erected, the positions of the hole 29 of the shaft body 22 and the long hole 31 of the reel 23 are made to coincide with each other, and these holes 29 and 31 are elongated pins made of plastic or the like. In this state, the branch line pulling tool 20 is carried to the installation site of the antenna mast with the positions of the holes 29 and 31 being matched.
[0035]
At the site where the antenna mast is erected as shown in FIG. 1, one end of the antenna branch line 8 is inserted and fixed in the hole 5A of the stopper 5 of the mast 2 and the hook part 21D at the end of the branch line tensioner 20 is fixed to the stopper 6. The other end of the antenna branch line 8 whose middle part is folded back by the folding tool 7 is wound around the shaft body 22 of the branch tension tool 20.
[0036]
As shown in FIG. 4, the winding operation starts by first inserting the antenna branch line 8 into the hole 29 of the shaft body 22 and the long hole 31 of the reel 23. This insertion operation is performed while pushing the elongated pin-like member inserted into these holes 29 and 31 with the antenna branch line 8 in order to make the positions of the holes 29 and 31 coincide, and one end is inserted and fixed in the hole 5A of the stopper 5 After the antenna branch line is inserted into the holes 29 and 31 until the length of the antenna branch line 8 up to the branch line tensioning tool 20 reaches an appropriate amount, the remaining portion of the antenna branch line 8 protruding from the holes 29 and 31 is cut off and removed. . This state is shown in FIG.
[0037]
Next, the shaft body 22 is rotated in the winding direction A by a tool such as a wrench engaged with the engaging portion 22A. When this rotation operation is performed, as shown in FIG. 4, there is a gap between the shaft body 22 and the reel 23 and the cylindrical portion 23 A, and the long hole 31 of the reel 23 extends in the circumferential direction of the reel 23. As shown in FIG. 5, the shaft body 22 first rotates in the direction A, so that the antenna branch line 8 enters the gap between the shaft body 22 and the cylindrical portion 23 A of the reel 23, as shown in FIG. 5. And the reel 23.
[0038]
For this reason, it is possible to prevent the antenna branch line 8 from falling out of the holes 29 and 31 in the initial stage of rotating the shaft body 22.
[0039]
Thereafter, by continuously rotating the shaft body 22 in the A direction, the reel 23 rotates integrally with the shaft body 22 by frictional force with the antenna branch line 8, and the antenna branch line 8 is a reel 23 on the outer periphery of the shaft body 22. It will be wound on.
[0040]
It should be noted that the long hole 31 provided in the reel 23 may be only one of the two sides in the diametrical direction where the antenna branch line 8 is inserted, and the other may be a simple round hole, but both are long as in the present embodiment. By using holes, it is possible to obtain an advantage that the long hole into which the antenna branch line 8 is inserted can be either long hole.
[0041]
As described above, when the shaft body 22 is rotated in the winding direction A, the protrusion 37 of the rotating member 24 integrated with the main body 21 by the engagement / disengagement means 25 is directed to the side opposite to the winding direction A. Since it has the downward inclined surface 37B, the convex part 28B between the recessed parts 28A in the clutch part 22B of the shaft body 22 rides on this inclined surface 37B as shown in FIG. As a result, the rotating member 24 and the side plate 21B of the main body 21 are elastically bent and deformed inward of the main body 21, and as a result, the convex portion 28B can pass through the protrusion 37, and the shaft body 22 rotates in the A direction. Is allowed, and the shaft 22 can be continuously rotated in this direction. Thereby, an appropriate tensile force can be applied to the antenna branch line 8.
[0042]
When the rotation operation of the shaft body 22 is stopped, the shaft body 22 tries to rotate in the direction opposite to the A direction by the tensile force of the antenna branch line 8, but at this time, the convex portion 28B of the clutch portion 22B protrudes. 37 is engaged with the protruding surface 37A, and the rotation of the shaft body 22 in the direction opposite to the A direction is prevented.
[0043]
Therefore, the reverse rotation restricting means B for restricting the rotation of the shaft body 22 in the direction opposite to the A direction is constituted by the clutch portion 22B and the protrusion 37.
[0044]
The winding operation of the antenna branch line 8 by the branch line tensioning tool 20 described above is performed for each antenna branch line 8, thereby generating an appropriate tensile force on each antenna branch line 8, but setting the antenna 1 in a predetermined direction. Therefore, when it becomes necessary to reduce the tensile force of a certain antenna branch 8, in order to make the rotating member 24 in the branch tensioner 20 of the antenna branch 8 free with respect to the main body 21, First, the small screw 35 of the engagement / disengagement means 25 in the branch wire pulling tool 20 is loosened, and then the small screw 35 is slid along the long hole 34, whereby the small screw 35 is detached from the recess 33 of the rotating member 24. .
[0045]
As a result, the rotating member 24 can rotate around the shaft body 22, and the reel 23 and the shaft body 22 try to rotate in the direction opposite to the A direction by the tensile force generated in the antenna branch line 8, and the convexity of the clutch portion 22B. When the projection 37 is pushed by the portion 28B, the rotating member 24 rotates in the direction opposite to the A direction, so that the shaft body 22 and the reel 23 also rotate in the same direction. As a result, the antenna branch line 8 is rewound and its tensile force is reduced.
[0046]
Thus, when the magnitude of the tensile force is changed and the direction of the antenna 1 becomes a predetermined direction, the small screw 35 of the engagement / disengagement means 25 is slid and inserted into the concave portion 33 of the rotating member 24, and the small screw 35 The rotating member 24 is integrated with the main body 21 by tightening, and the rotating member 24 is returned to a non-rotatable state around the shaft body 22.
[0047]
As described above, in the present embodiment, the rotating member 24 and the engaging / disengaging means for allowing the rotating member 24 to be freely engaged with and disengaged from the main body 21, that is, for integrating the rotating member with the main body 21. 25 constitutes a reverse rotation means C for rotating the shaft body 22 in the direction opposite to the A direction. And this reverse rotation means C rotates the clutch part 22B which comprises the reverse rotation control means B, and the protrusion 37 of the rotation member 24 in the direction opposite to the A direction together with the shaft body 22. Therefore, the reverse rotation restricting means B and the shaft body 22 are united and rotated in the direction opposite to the A direction by the reverse rotation means C.
[0048]
In the above embodiment, when the rotating member 24 rotates in the direction opposite to the A direction, the protrusion 37 of the rotating member 24 is deformed by the side plate 21B of the main body 21 being elastically bent and deformed in the inner and outer directions of the main body 21. The engagement and disengagement with the semi-elliptical protrusions 38 of the side plate 21B are repeated, in other words, the rotating member 24 is rotated moderately. For this reason, the rotating member 24 can be rotated while confirming the change in the tensile force of the antenna branch line 8 by touching the finger touch portion 24A provided on the rotating member 24 and rotating the rotating member 24 while suppressing the rotation. Moreover, the rotation position where the rotating member 25 can be integrated with the main body 21 by the engaging / disengaging means 25 can be easily confirmed.
[0049]
In the present embodiment described above, the reverse rotation restricting means B and the reverse rotation means C are provided only on one side of the main body 21, but they may be provided on both sides of the main body 21.
[0050]
Further, as indicated by a two-dot chain line 21C ′ in FIG. 2, an end portion on the shaft body 22 side of the upper surface plate 21C of the main body 21 is extended to the vicinity of the reel 23, and thereby the antenna branch line wound around the reel 23. 8 may be prevented from falling off.
[0051]
【The invention's effect】
According to the present invention, even if the rotation of the shaft body is restricted to the opposite side to the winding direction by the reverse rotation restricting means, the shaft body can be rotated to the opposite side to the winding direction by the reverse rotating means. For this reason, it becomes possible to change the tensile force of the branch line wound around the shaft body small, and the adjustment work of the tensile force can be performed.
[Brief description of the drawings]
FIG. 1 is a diagram showing a state in which an antenna mast standing on a roof of a building is supported by an antenna branch to which a tensile force is applied by a branch tensioner according to an embodiment of the present invention.
FIG. 2 is a perspective view showing the whole branch line tensioner shown in FIG. 1;
FIG. 3 is an exploded perspective view of the branch line tensioner of FIG. 2;
FIG. 4 is a cross-sectional view showing a state where an antenna branch line is inserted into a hole of a shaft body and a hole of a reel.
5 is a cross-sectional view showing a state where the shaft body is rotated in the winding direction from the state of FIG. 4;
FIG. 6 is a cross-sectional view showing a positional relationship between a clutch portion of a shaft body constituting the reverse rotation restricting means and a protrusion of the rotating member.
7 is a cross-sectional view showing a state where a shaft body is rotated to wind up a branch line from the state of FIG. 6;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Antenna 2 Mast 5, 6 Stopper 7 Folding tool 8 Antenna branch line 20 Branch line tension tool 21 Branch line tension tool main body 22 Shaft body 22B Clutch part 23 Reel 24 Rotating member 25 Engaging / disengaging means 37, 38 Protrusion A Winding direction B Reverse Rotation restriction means C Reverse rotation means

Claims

A main body, a shaft body rotatably attached to the main body, a rotating member disposed so as to be rotatable around the shaft body at a side portion of the main body, and the rotating member integrated with the main body; Engaging / disengaging means for non-integrating,
The main body has left and right side plates, and the shaft body for winding the antenna branch line is inserted into a hole formed in one end portion of these side plates, and is opposite to the one end portion. At the end of the body on the side, a hook portion is formed that is fixed to a stopper attached to the mast of the antenna,
The shaft body is provided with a clutch portion in which a plurality of concave portions are formed in the circumferential direction at the end portion on the rotating member side, and a convex portion is formed between the concave portions. The rotating member disposed between one of the left and right side plates of the main body is formed with a protrusion that protrudes toward the clutch portion.
The projections stand up perpendicularly or substantially at right angles to the clutch portion side, and a projection surface that prevents the shaft body from rotating in the direction opposite to the winding direction of the antenna branch line by engaging the convex portion. The projecting surface is formed with a downward slope gradually approaching the one side plate from the tip of the projecting surface to the side opposite to the winding direction of the antenna branch line, and the projection is formed by rotating the shaft body in the winding direction of the antenna branch line It has a triangular protruding shape having an inclined surface for allowing the protrusion to pass through the protrusion by the elastic deformation of the rotating member and the one side plate to the inside of the main body,
The engagement / disengagement means includes a long hole formed in the one side plate, and a small screw that is slidably inserted into the long hole and is inserted into and extracted from a recess formed in the rotating member. ,
The rotating member that has been integrated with the main body by the engaging / disengaging means is not integrated with the main body, so that the rotating member can rotate around the shaft body, and the protrusion of the rotating member. The branch tensioner according to claim 1, wherein the shaft body in which the protrusion is engaged with the projecting surface of the antenna branch can be rotated to the opposite side to the winding direction of the antenna branch .

The branch line tension tool according to claim 1, wherein the projection of the rotating member is formed with a recessed back surface opposite to the clutch portion side, and the one side plate disposed on the back surface side includes: A protrusion is formed that enters the recess of the protrusion, and the protrusion of the rotating member engages with the protrusion of the one side plate when the rotating member rotates in a direction opposite to the winding direction of the antenna branch line. A branch tensioning device characterized by detaching .