JP3648036B2

JP3648036B2 - Pipe joint

Info

Publication number: JP3648036B2
Application number: JP35620297A
Authority: JP
Inventors: 浩渡辺
Original assignee: 曽根湯布院機械株式会社
Priority date: 1997-12-08
Filing date: 1997-12-08
Publication date: 2005-05-18
Anticipated expiration: 2017-12-08
Also published as: JPH11173312A

Description

【０００１】
【発明の属する技術分野】
本発明は、手摺り等のパイプ等からなる棒状物（バー）同士やパイプと他の部材を接続する際のパイプジョイントに関するものである。
【０００２】
【従来の技術】
従来、各種の現場でパイプ等からなる棒状物（バー）同士の接続や、他の部材との接続の際には、パイプ等からなる棒状物（バー）の端部に螺子部を形成したり、棒状物（バー）の端部にフランジ部等からなる接続部材を溶接する等して棒状物の端部に接合部を形成していた。また、近年、パイプ等からなる棒状物（バー）を階段や公共の施設等の壁面や固定用の部材等に接続し、種々の場所に棒状物（バ−）からなる手摺り等が設置されている。また、パイプ等の棒状物（バー）からなるタオル掛け等を、壁面に固定された固定部材に取り付ける場合等には、棒状物（バー）の端部にネジ等で取付部材を取り付けて棒状物（バー）を固定部材に取り付けている。
パイプ等の棒状物（バー）からなるタオル掛けを壁面に固定した固定部材に取り付ける際に、パイプ等の棒状物（バー）の端部に取り付ける取付部材として、以下のものが開示されている。
特開平８−１５４８６３号公報（以下、イ号公報という）に開示された、壁面と直交する方向の突出部を有し僅かに湾曲し得る本体と、突出部に回転自在に挿着された内周にネジ溝部を有する本体側取付部材と、壁面の任意の複数箇所に固定される、外周面にネジ溝部を設けた円柱部および円柱部の反壁面側に形成した突出部の内周面に係合する係合突起を有する壁側固定部材と、からなるタオル掛け等の取付装置。
【０００３】
しかしながら上記従来の各種現場でのパイプ等の棒状物の接続や手摺りやタオル掛け等のパイプ等からなる棒状物（バー）の棒状物（バー）同士の接続や他の部材との接続の際に、棒状物（バー）の端部に形成される螺子部やフランジ部等からなる接合部や棒状物（バー）の端部に取り付けられる取付部材等のパイプジョイントは、以下の課題を有していた。
パイプ等からなる棒状物（バー）の端部に螺子部からなる接合部を形成する場合、螺子部の形成が困難で手間がかかるとともに、特に肉圧の薄いパイプや外周面に樹脂を被覆した被覆管からなる棒状物（バー）の場合には棒状物（バー）の外周面に螺子部の形成が困難である。
パイプ等からなる棒状物（バー）の端部にフランジ部等からなる接合部を溶接する場合、棒状物（バー）への接合部の取り付け作業に手間がかかり取り付け作業性に欠けるとともに、特に肉圧の薄いパイプや外周面に樹脂を被覆した被覆管からなる棒状物（バー）の場合には溶接時の熱で棒状物（バー）が変形，変質する。
イ号公報に記載のタオル掛け等の取付装置では、タオル掛け等の本体の端部等の突出部に本体側取付部材をボルトで固定して、壁面にボルトで固定された壁側固定部材に本体側取付部材を螺合して本体を固定しているため、本体の端部等の突出部への本体側取付部材の取り付け作業の作業性に欠けるとともに、本体側取付部材の構造も複雑で生産性に欠ける。
【０００４】
本発明は上記従来の課題を解決するもので、パイプ等からなる棒状物（バー）の端部等に加工を加えることなく容易に取り付けることができ、構造が簡単で取り付け作業の作業性に優れるとともに、生産性に優れたパイプジョイントを提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記従来の課題を解決するために本発明におけるパイプジョイントは、以下の構成を有している。
本発明の請求項１に記載のパイプジョイントは、円柱や角柱等の柱状に形成されたパイプ嵌合部と、前記パイプ嵌合部の一端部側の端面の略中央に穿設された螺合孔部と、前記螺合孔部の先端部に円錐状や円錐台状に形成された摺動部と、前記パイプ嵌合部の他端部側の端面から前記螺合孔部を中心に分割して２乃至複数の拡開部を形成する１乃至複数のスリットと、前記パイプ嵌合部の一端部側の外周面に螺子状部を形成した雄形接合部と、を有する雄形パイプジョイントと、円柱や角柱等の柱状に形成されたパイプ嵌合部と、前記パイプ嵌合部の一端部側の端面の略中央に穿設された螺合孔部と、前記螺合孔部の先端部に円錐状や円錐台状に形成された摺動部と、前記パイプ嵌合部の他端部側の端面から前記螺合孔部を中心に分割して２乃至複数の拡開部を形成する１乃至複数のスリットと、前記パイプ嵌合部の一端部側の外周径をパイプ等からなる棒状物の外周径と同一径のパイプ状にして内周壁に螺子状部を形成した雌形接合部と、を有する雌形パイプジョイントと、先端側に円錐状や円錐台状に形成された拡大部を有し前記拡大部の底面側に連設された円柱部と、前記円柱部に形成された螺溝部と、前記円柱部の端面に形成されドライバーやレンチと係合する係合部と、を備え、前記雄形パイプジョイント及び前記雌形パイプジョイントの各々の前記螺合孔部に螺合されながら前記拡開部を拡開する拡開固定具と、を備えた構成を有している。
これにより、手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部にパイプ嵌合部を嵌合して螺合孔部に拡開固定具を螺合し、拡開固定具を回転させて奥に進めることにより、拡開固定具の拡大部や円柱部が螺合孔部の奥の摺動部に挿入され、パイプ嵌合部の拡開部を拡開させてパイプ状取付部の内周壁に拡開部を押しつけて圧接しパイプ嵌合部をパイプ状取付部に固定することができるという作用を有する。
また、パイプ嵌合部の一端部側に雄形又は雌形接合部を有しているため、手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部にパイプ嵌合部を拡開固定具で固定するだけでパイプ等からなる棒状物（バー）の端部等に雄形又は雌形接合部を形成できるという作用を有する。更に、パイプ等からなる棒状物（バー）の端部等に該パイプ嵌合部を固定するだけで、棒状物（バー）同士や他の部材と雄形又は雌形接合部で接続できるという作用を有する。
また、パイプ嵌合部を円柱で形成した場合には、パイプ状取付部の内周壁と拡開部との圧接面が広いので長さ方向に折れ曲がり部のない手摺り等のパイプ等からなる棒状物（バー）の端部等のパイプ状取付部にパイプ嵌合部を固定した際に棒状物（バー）とパイプ嵌合部との回転を防止できるという作用を有する。
【０００６】
ここで、スリットとしては、該パイプジョイントの材質（ステンレス等の金属や合成樹脂、合成ゴム等）等に応じて、パイプ嵌合部の他端部の端面乃至螺合孔部の基部まで形成される。拡開固定具を螺合孔部に螺合した際に拡開部が拡開してパイプ嵌合部を嵌合したパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部の内周壁に拡開部を圧接固定できればよい。スリットの幅は０．１ｍｍ以上であればよい。
また、雄形又は雌形接合部の外周径をパイプ嵌合部の外周径と同一にしても、パイプ嵌合部の外周径と異なる大きさにしてもよい。
パイプ等からなる棒状物（バー）としては、パイプは勿論のこと端部等の棒状物（バー）同士の接続部や他の部材との接続部にパイプ状の中空部を有するものであれば中間部が中実の棒状のものでもよく、長さ方向に湾曲部を有したものでもよい。また、棒状物（バー）は表面を合成樹脂で被覆したものでもよい。更に、パイプ等からなる棒状物（バー）の断面形状としては、円形は勿論のこと楕円形や四角形等の多角形等、いずれの形状でもよい。
拡開固定具の円柱部の端面の係合部としては、レンチを脱着自在に固定できる角穴やドライバーを係合する−や＋の溝状に形成される。
螺合孔部や螺溝部は全面に溝を形成してもよいが、溝に代えて螺着できる作用を有する突起又は突条を１乃至複数形成してもよい。
【０００７】
本発明の請求項２に記載のパイプジョイントは、請求項１に記載の発明において、前記パイプ嵌合部の前記拡開部が、外周面に装着されたゴム等の弾性部材からなる滑り止め部を備え、及び／又は前記拡開部の先端側の断面積が基部側の断面積より小さく形成された構成を有している。
これにより、各種現場におけるパイプや手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部にパイプ嵌合部を嵌合して拡開固定具を螺合孔部に螺合し、拡開部をパイプ状取付部の内周壁に押しつけて圧接した際に、パイプ状取付部の内周壁に滑り止め部が当接するため、パイプ状取付部の内周壁と滑り止め部の滑り摩擦を大きくでき、パイプ状取付部とパイプ嵌合部との回転を防止することができるという作用を有する。
また、パイプ嵌合部の拡開部の先端側の断面積を基部側の断面積より小さくした場合、パイプ嵌合部をパイプ状取付部に挿入し易く作業性を向上させることができるという作用を有する。
ここで、滑り止め部としては、少なくとも、パイプ嵌合部の拡開部の、拡開部を拡開した際にパイプ状取付部の内周壁に当接する位置に装着される。また、各拡開部の外周面に各々硬質のゴム等からなる滑り止め部を装着しても、全ての拡開部の外周面を覆うゴム環からなる滑り止め部を装着してもよい。また、滑り止め部を拡開部の外周面に脱着自在に装着してもよく、これにより、該パイプジョイントを取り付ける手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部の大きさ等に応じて拡開部に装着する滑り止め部を交換することができる。更に、拡開部の外周面の滑り止め部の装着位置に滑り止め部を固定する切欠部や段差部等からなる装着固定部を形成し、滑り止め部を装着固定してもよい。これにより、該パイプジョイントの取付作業時に滑り止め部が所定位置から移動するのを防止できる。
【０００８】
【発明の実施の形態】
（実施の形態１）
以下、本発明におけるパイプジョイントの実施の形態１について、図面を用いて説明する。
図１は実施の形態１におけるパイプジョイントの雄形パイプジョイントを示す要部分解断面図であり、図２は図１のパイプ嵌合部の平面図である。
図中、１は実施の形態１におけるパイプジョイントの雄形パイプジョイント、２は他の部材等に接続する手摺り等のパイプ等からなる棒状物（バー）の端部のパイプ状取付部、２ａはパイプ状取付部２の内周壁、３は円柱状に形成されたパイプ嵌合部、４はパイプ嵌合部３の一端部側の端面の略中央に穿設された螺合孔部、４ａは螺合孔部４の先端部に形成された円錐状又は円錐台状に形成された摺動部、４ｂは螺合孔部４のネジ部、５はパイプ嵌合部３の他端部側の端面から螺合孔部４を中心に十字状や三叉状に形成されたスリット、６はパイプ状取付部２の内周壁２ａの径よりも外周が小さく形成され更にスリット５で４分割等複数に分割されたパイプ嵌合部３の拡開部、７はパイプ嵌合部３の一端部側に同軸状に拡大して形成されその外周面に螺子状部等で形成された雄形接合部、８は螺合孔部４に螺合される拡開固定具、８ａは拡開固定具８の先端側に円錐状に形成された拡大部、８ｂは拡大部８ａに連設された円柱部、８ｃは円柱部８ｂに形成された螺溝部、９は拡開固定具８の端面に形成され六角レンチやドライバー等の回動具が嵌合される六角穴等からなる係合部である。
【０００９】
以上のように構成されたパイプジョイントの雄形パイプジョイントを手摺り等のパイプ等からなる棒状物（バー）の端部のパイプ状取付部に取り付ける場合について、以下図面を用いて説明する。
図３は実施の形態１におけるパイプジョイントの雄形パイプジョイントをパイプ等からなる棒状物（バー）の端部のパイプ状取付部に取り付けた状態を示す要部断面図である。
手摺り等のパイプ等からなる棒状物（バー）の端部のパイプ状取付部２に雄形パイプジョイント１のパイプ嵌合部３を嵌合し、次に、パイプ嵌合部３の略中央に穿設された螺合孔部４に拡開固定具８を挿入して係合部９に六角レンチやドライバー等の回動具を係合し螺溝部８ｃとネジ部４ｂを螺合する。拡開固定具８が螺合孔部４内に螺合しながら進入するのに伴い、拡開固定具８の拡大部８ａや円柱部８ｂが螺合孔部４の摺動部４ａに挿入されて拡開部６がスリット５で拡開されてパイプ状取付部２の内周壁２ａに押しつけられ、図３に示すように、パイプ嵌合部３がパイプ状取付部２に固定されるとともに、棒状物（バー）の端部に雄形接合部７が形成される。
【００１０】
以上のように実施の形態１におけるパイプジョイントの雄形パイプジョイントは構成されているため、以下の作用を有する。
手摺り等のパイプ等からなる棒状物（バー）の端部のパイプ状取付部に、該雄形パイプジョイントのパイプ嵌合部を嵌合して拡開固定具をパイプ嵌合部の螺合孔部に螺合するだけで、パイプ嵌合部の拡開部を拡開してパイプ状取付部の内周壁に拡開部を押しつけて圧接しパイプ嵌合部をパイプ状取付部に固定できるという作用を有する。
パイプ嵌合部の一端部側に螺子状部等からなる雄形接合部を有しているため、手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部のパイプ状取付部にパイプ嵌合部を固定するだけでパイプ等からなる棒状物（バー）の端部に雄形接合部を形成でき、パイプ等からなる棒状物（バー）同士の接続や他の部材との接続等が容易にできるという作用を有する。
パイプ嵌合部を円柱で形成しているため、パイプ状取付部の内周壁と拡開部との圧接面が広く、手摺り等のパイプ等からなる棒状物（バー）の端部のパイプ状取付部にパイプ嵌合部を回転させることなく固定できるという作用を有する。
【００１１】
（実施の形態２，３）
本発明におけるパイプジョイントの実施の形態２及び３について、以下図面を用いて説明する。
図４は実施の形態２におけるパイプジョイントの雌形パイプジョイントを示す要部分解断面図であり、図５はパイプ嵌合部の平面図であり、図６は実施の形態３におけるパイプジョイントの雌形パイプジョイントを示す要部分解断面図であり、図７はパイプ嵌合部の平面図である。尚、実施の形態１と同様のものには同一の符号を付して説明を省略する。
図中、１０は実施の形態２におけるパイプジョイントの雌形パイプジョイント、６ａは各拡開部６の端部の外周面の所定部を切り欠いた切欠部からなる装着固定部、１１はパイプ嵌合部３の一端部側をパイプ状に形成して内周面に形成した螺子状部からなるナット状の雌形接合部、１２はパイプ嵌合部３の各拡開部６の装着固定部６ａに各々装着固定された硬質ゴム等からなる複数の滑り止め部、１３は実施の形態３におけるパイプジョイントの雌形パイプジョイント、６ｂはパイプ嵌合部３の他端部側の外周面に段差状に形成された装着固定部、１４は装着固定部６ｂに脱着自在に装着されパイプ嵌合部３の外周面を覆うゴム環からなる滑り止め部である。
ここで、雌形パイプジョイント１０，１３のパイプ状取付部２への取り付けは、実施の形態１と同様なので説明を省略する。
【００１２】
以上のように、実施の形態２，３におけるパイプジョイントの雌形パイプジョイントは構成されているため、以下の作用を有する。
パイプ嵌合部の端部の外周面に形成された装着固定部に硬質ゴムやゴム環等からなる滑り止め部を装着固定しているため、パイプ嵌合部をパイプ状取付部に嵌合して拡開固定具により拡開部を拡開してパイプ状取付部の内周壁に圧接した際に、内周壁と滑り止め部が圧接されて滑り摩擦が大きくなり、該雌形パイプジョイントとパイプ状取付部を回転させることなく固定することができるという作用を有する。また、硬質ゴムやゴム環等からなる滑り止め部を拡開部の装着固定部で脱着自在に装着することにより、該雌形パイプジョイントを取り付けるパイプ状取付部の大きさ等に応じて大きさ等の異なる滑り止め部に交換して使用することができるという作用を有する。
また、パイプ嵌合部の一端部側に形成された雌形接合部がナット状に形成されているため、実施の形態１の雄形パイプジョイントを取り付けた手摺り等のパイプ等からなる棒状物（バー）と接続する際、各接合部を螺合することができ、実施の形態１の雄形パイプジョイント及び実施の形態２若しくは３の雌形パイプジョイントを取り付けた手摺り等のパイプ等からなる棒状物（バー）同士を接続できるという作用を有する。
また、パイプ嵌合部を手摺り等のパイプ等からなる棒状物（バー）に取り付けるだけで、該パイプジョイントを介して複数の棒状物（バー）を接続することができ、長さ方向に湾曲部を有した棒状物（バー）も、容易に他の部材と接続できるという作用を有する。
【００１３】
次に、実施の形態１の雄形パイプジョイント及び実施の形態２の雌形パイプジョイントを用いて手摺り等のパイプ等からなる複数の棒状物（バー）を接続する場合について、以下図面を用いて説明する。
図８は複数の棒状物（バー）を接続する場合の要部分解平面図である。
１５ａは端部に実施の形態１の雄形パイプジョイント１又は実施の形態２における雌形パイプジョイント１０を取り付けた棒状物（バー）、１５ｂは一端部に実施の形態１における雄形パイプジョイント１を他端部に実施の形態２における雌形パイプジョイント１０を取り付け長さ方向に湾曲部を有した棒状物（バー）である。
図８に示すように、棒状物（バー）１５ａ，１５ｂの端部に雄形パイプジョイント１又は雌形パイプジョイント１０を取り付け、棒状物（バー）１５ａ，１５ｂの対向した雄形及び雌形接合部７，１１を螺合して棒状物（バー）１５ａ，１５ｂを接続する。
尚、棒状物（バー）１５ｂの両端部に雄形パイプジョイント１又は雌形パイプジョイント１０を取り付けて棒状物（バー）１５ｂに接続される棒状物（バー）１５ａの端部に雌形パイプジョイント１０又は雄形パイプジョイント１を取り付けて各棒状物（バー）１５ａ，１５ｂを接続してもよい。また、雌形パイプジョイント１０の代わりに実施の形態３における雌形パイプジョイント１３を用いてもよい。
【００１４】
【発明の効果】
以上のように本発明におけるパイプジョイントによれば、以下の優れた効果を実現できる。
請求項１に記載の発明によれば、
（１）パイプ嵌合部の一端部側の端面の略中央に先端部が円錐状や円錐台状に形成された螺合孔部を有し、パイプ嵌合部の他端部側に螺合孔部を中心にパイプ嵌合部を複数の拡開部に分割したスリットを有しているため、手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部のパイプ状取付部にパイプ嵌合部を嵌合して螺合孔部に拡開固定具を螺合するだけで、拡開固定具の拡大部や円柱部が螺合孔部の摺動部に挿入されるとともにパイプ嵌合部のスリットが拡開され、拡開部をパイプ状取付部の内周壁に押しつけて圧接することができ、手摺り等のパイプ等からなる棒状物（バー）の端部等に加工を加えることなくパイプ嵌合部を容易に固定することができ、手摺り等のパイプ等からなる棒状物（バー）の端部等のパイプ状取付部への該パイプジョイントの取り付け作業の作業性に優れる。
（２）パイプ嵌合部の一端部側に螺子状部等からなる雄形接合部を有しているため、手摺り等のパイプ等からなる棒状物（バー）のパイプ状取付部にパイプ嵌合部を拡開固定具で固定するだけでパイプ等からなる棒状物（バー）の端部等に接合部を形成することができ、従来のように棒状物（バー）に加工を加えることなく該パイプジョイントの接合部で棒状物（バー）同士の接続や他の部材との接続ができ、手摺り等のパイプ等からなる棒状物（バー）の接続等の作業性に優れる。
（３）パイプ嵌合部を手摺り等のパイプ等からなる棒状物（バー）の端部に取り付けるだけで接合部で複数のパイプ等からなる棒状物（バー）を任意に接続することができ、長さ方向に湾曲部を有した棒状物（バー）も容易に接続することができ、手摺り等のパイプ等からなる棒状物（バー）の接続時の作業性に優れる。
（４）パイプ嵌合部を円柱で形成した場合は、パイプ状取付部の内周壁と拡開部との圧接面が広いので長さ方向に折れ曲がり部のない手摺り等のパイプ等からなる棒状物（バー）の端部等のパイプ状取付部に固定しても棒状物（バー）とパイプ嵌合部とを回転させることなく確実に固定でき、パイプ等からなる棒状物（バー）を接続して手摺り等に使用した際にも安全性に優れる。
（５）パイプ嵌合部を手摺り等のパイプ等からなる棒状物（バー）のパイプ状取付部に嵌合して拡開固定具を螺合孔部に螺合するだけでパイプ嵌合部をパイプ状取付部に取り付けることができ、少ない部品点数で該パイプ嵌合部をパイプ状取付部に取り付けることができるとともに、簡単な構造で該パイプジョイントの生産性に優れる。
（６）表面に合成樹脂等を被覆した被覆管からなる棒状物（バー）同士の接続や他の樹脂製部材と接続する場合にも、棒状物（バー）のパイプ状取付部にパイプ嵌合部を嵌合して拡開固定具により拡開部をパイプ状取付部の内周壁に圧接するだけで、該パイプジョイントを棒状物（バー）のパイプ状取付部に取り付けて接続等に要する雄形又は雌形接合部を棒状物（バー）に形成することができ、従来のように、被覆管からなる棒状物（バー）へのフランジ部等からなる接合部の溶接等を要さず、該パイプジョイントの取り付け作業性に優れるとともに、被覆管を変質させることなく取り付けることができ取り付け精度を向上できる。
請求項２に記載の発明によれば、請求項１の効果に加えて、
（７）パイプ嵌合部の拡開部の外周面に滑り止め部を備えているため、手摺り等のパイプ等からなる棒状物（バー）のパイプ状の端部等のパイプ状取付部にパイプ嵌合部を嵌合して拡開固定具を螺合孔部に螺合し、拡開部をパイプ状取付部の内周壁に押しつけて圧接した際に、パイプ状取付部の内周壁に滑り止め部が当接してパイプ状取付部の内周壁と滑り止め部の滑り摩擦を大きくでき、パイプ状取付部とパイプ嵌合部との回転を防止することができ、より強固に確実に該パイプジョイントを固定することができる。
（８）パイプ嵌合部の拡開部の先端側の断面積を基部側の断面積より小さくした場合、パイプ嵌合部をパイプ状取付部に挿入し易く作業性の向上を図ることができる。
【図面の簡単な説明】
【図１】実施の形態１におけるパイプジョイントの雄形パイプジョイントを示す要部分解断面図
【図２】図１のパイプ嵌合部の平面図
【図３】実施の形態１におけるパイプジョイントの雄形パイプジョイントをパイプ等からなる棒状物（バー）の端部のパイプ状取付部に取り付けた状態を示す要部断面図
【図４】実施の形態２におけるパイプジョイントの雌形パイプジョイントを示す要部分解断面図
【図５】パイプ嵌合部の平面図
【図６】実施の形態３におけるパイプジョイントの雌形パイプジョイントを示す要部分解断面図
【図７】パイプ嵌合部の平面図
【図８】複数の棒状物（バー）を接続する場合の要部分解平面図
【符号の説明】
１雄形パイプジョイント
２パイプ状取付部
２ａ内周壁
３パイプ嵌合部
４螺合孔部
４ａ摺動部
４ｂネジ部
５スリット
６拡開部
６ａ装着固定部
６ｂ装着固定部
７雄形接合部
８拡開固定具
８ａ拡大部
８ｂ円柱部
８ｃ螺溝部
９係合部
１０雌形パイプジョイント
１１雌形接合部
１２滑り止め部
１３雌形パイプジョイント
１４滑り止め部
１５ａ棒状物（バー）
１５ｂ棒状物（バー）[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe joint for connecting the sticks (bars) or between the pipes and other members made of a pipe or the like of the handrail or the like.
[0002]
[Prior art]
Conventionally, sticks made of pipes or the like in various field (bars) connection or between the time of the connection to another member, or forming a screw portion on an end portion of the stick-shaped material consisting of a pipe or the like (bar) The connecting portion is formed at the end of the rod-like object by welding a connecting member including a flange portion or the like to the end of the rod-like object (bar). In recent years, bar-like objects (bars) made of pipes or the like are connected to wall surfaces or fixing members of stairs or public facilities, and handrails made of bar-like objects (bars) are installed at various places. ing. In addition, when attaching a towel rack made of a rod-like object (bar) such as a pipe to a fixing member fixed to the wall surface, the attachment member is attached to the end of the rod-like object (bar) with a screw or the like. (Bar) is attached to the fixing member.
The following is disclosed as an attachment member to be attached to an end portion of a rod-like object (bar) such as a pipe when a towel rack made of a rod-like object (bar) such as a pipe is attached to a fixing member fixed to a wall surface.
A main body disclosed in Japanese Patent Laid-Open No. 8-154863 (hereinafter referred to as “a”) having a protruding portion in a direction perpendicular to the wall surface and capable of being slightly bent, and an inner portion rotatably inserted in the protruding portion On the inner peripheral surface of the main body side mounting member having a screw groove portion on the periphery, a cylindrical portion provided with a screw groove portion on the outer peripheral surface, and a protruding portion formed on the opposite wall surface side of the cylindrical portion, which are fixed at any plurality of locations on the wall surface A mounting device such as a towel rack, comprising a wall-side fixing member having an engaging protrusion to be engaged.
[0003]
However during connection of the stick-shaped material (bar) between the connection and the other members of the stick-shaped material consisting of a pipe such as a connection or handrail and towel sticks the pipe or the like in the above conventional various sites (Bar) A pipe joint such as a joint formed by a screw portion or a flange portion formed at an end portion of a rod-like object (bar) or an attachment member attached to an end portion of the rod-like object (bar) has the following problems. It was.
When forming a joint consisting of a screw part at the end of a rod-like object (bar) made of a pipe or the like, it is difficult and difficult to form the screw part. In the case of a rod-shaped object (bar) made of a cladding tube, it is difficult to form a screw portion on the outer peripheral surface of the rod-shaped object (bar).
When welding a joint made of a flange or the like to the end of a rod-like object (bar) made of a pipe, etc., it takes time to install the joint to the rod-like object (bar), and the attachment workability is lacking. In the case of a bar-shaped object (bar) consisting of a thin pressure pipe or a coated tube whose outer peripheral surface is coated with resin, the bar-shaped object (bar) is deformed and altered by the heat during welding.
In the attaching device such as the towel rack described in the gazette, the main body side mounting member is fixed to the protruding portion such as the end of the main body such as the towel rack with a bolt, and the wall side fixing member fixed to the wall surface with the bolt is used. Since the main body side mounting member is screwed to fix the main body, the work of attaching the main body side mounting member to the projecting part such as the end of the main body is not easy and the structure of the main body side mounting member is complicated. Productivity is lacking.
[0004]
The present invention solves the above-described conventional problems, and can be easily attached to the end of a rod-like object (bar) made of a pipe or the like without processing, and the structure is simple and the workability of the attachment work is excellent. At the same time, it aims to provide a pipe joint with excellent productivity.
[0005]
[Means for Solving the Problems]
In order to solve the above conventional problems, the pipe joint in the present invention has the following configuration.
A pipe joint according to a first aspect of the present invention is a pipe fitting portion formed in a columnar shape such as a cylinder or a prism, and a threaded engagement formed at substantially the center of an end face on one end side of the pipe fitting portion. A hole, a sliding part formed in a conical shape or a truncated cone at the tip of the screw hole, and an end surface on the other end side of the pipe fitting part are divided around the screw hole. A male pipe joint having one or more slits forming two or more widened portions and a male joint portion having a screw-like portion formed on the outer peripheral surface on one end side of the pipe fitting portion. A pipe fitting portion formed in a columnar shape such as a cylinder or a prism, a screwing hole portion drilled substantially in the center of an end surface on one end side of the pipe fitting portion, and a tip of the screwing hole portion A sliding part formed in a conical shape or a truncated cone shape on the part, and an end face on the other end side of the pipe fitting part, the screwing hole part is divided into 2 1 to a plurality of slits forming a plurality of widened portions, and an outer peripheral diameter on one end side of the pipe fitting portion is formed into a pipe shape having the same diameter as an outer peripheral diameter of a rod-like object made of a pipe or the like, and a screw is formed on the inner peripheral wall A cylindrical joint that has a female pipe joint having a female joint, and an enlarged portion that is formed in a conical shape or a truncated cone shape on the tip side and that is continuously provided on the bottom surface side of the enlarged portion Each of each of the male pipe joint and the female pipe joint, and a thread groove formed in the cylindrical part, and an engaging part that is formed on an end surface of the cylindrical part and engages with a driver or a wrench . And an expansion fixture that expands the expansion portion while being screwed into the screw hole portion.
As a result, the pipe fitting part is fitted to the pipe-like attachment part such as the pipe-like end part of a bar-like object (bar) made of a pipe such as a handrail, and the expansion fixture is screwed into the screwing hole part. Then, by rotating the expansion fixture and advancing it to the back, the expansion portion and the cylindrical portion of the expansion fixture are inserted into the sliding portion at the back of the screw hole, and the expansion portion of the pipe fitting portion is It has the effect that it can be expanded and pressed against the inner peripheral wall of the pipe-shaped mounting portion to press-contact the pipe fitting portion to the pipe-shaped mounting portion.
In addition, since it has a male or female joint on one end side of the pipe fitting portion, a pipe-like mounting portion such as a pipe-like end portion of a bar-like object (bar) made of a pipe such as a handrail The male or female joint can be formed at the end of a rod-like object (bar) made of a pipe or the like simply by fixing the pipe fitting part to the expansion fixture. Furthermore, it is possible to connect the rod-like objects (bars) to each other or other members by male or female joints only by fixing the pipe fitting part to the end of the rod-like object (bar) made of a pipe or the like. Have
In addition, when the pipe fitting part is formed of a cylinder, the pressure contact surface between the inner peripheral wall of the pipe-like attachment part and the widened part is wide, so that it is a rod-shaped pipe made of a handrail without a bent part in the length direction. When the pipe fitting part is fixed to the pipe-like attachment part such as the end part of the object (bar), the rod-like object (bar) and the pipe fitting part can be prevented from rotating.
[0006]
Here, the slit is formed from the end surface of the other end of the pipe fitting portion to the base of the screw hole depending on the material of the pipe joint (metal such as stainless steel, synthetic resin, synthetic rubber, etc.). The When the expansion fixture is screwed into the threaded hole portion, the expansion portion expands and the pipe shape such as a pipe-shaped end portion of a rod-like object (bar) made of a pipe or the like fitted with the pipe fitting portion What is necessary is just to be able to press-fix the expanding portion to the inner peripheral wall of the mounting portion. The width of the slit should just be 0.1 mm or more.
Further, the outer diameter of the male or female joint may be the same as the outer diameter of the pipe fitting portion or may be different from the outer diameter of the pipe fitting portion.
As a rod-shaped object (bar) made of a pipe or the like, as long as it has a pipe-shaped hollow portion at a connection portion between rod-shaped objects (bars) such as end portions or a connection portion with other members as well as a pipe The intermediate portion may be a solid rod or may have a curved portion in the length direction. Further, the rod-shaped object (bar) may be one whose surface is coated with a synthetic resin. Furthermore, the cross-sectional shape of a rod-like object (bar) made of a pipe or the like may be any shape such as a circle as well as an ellipse or a polygon such as a quadrangle.
The engaging portion of the end surface of the cylindrical portion of the expansion fixture is formed in the shape of a − or + groove that engages a square hole or a driver that can detachably fix the wrench.
The screw hole portion or the screw groove portion may be formed with a groove on the entire surface, but instead of the groove, one or a plurality of protrusions or ridges having an action capable of being screwed may be formed.
[0007]
A pipe joint according to a second aspect of the present invention is the anti-slip portion according to the first aspect, wherein the expansion portion of the pipe fitting portion is made of an elastic member such as rubber attached to an outer peripheral surface. And / or the cross-sectional area on the distal end side of the expanded portion is smaller than the cross-sectional area on the base side.
As a result, the pipe fitting part is fitted to the pipe-like attachment part such as the pipe-like end part of a bar-like object (bar) made of pipes, handrails, etc. at various sites, and the expansion fixture is screwed together. When the expansion portion is screwed into the hole and pressed against the inner peripheral wall of the pipe-shaped mounting portion and pressed, the anti-slip portion comes into contact with the inner peripheral wall of the pipe-shaped mounting portion. The sliding friction of the non-slip portion can be increased, and the rotation of the pipe-shaped mounting portion and the pipe fitting portion can be prevented.
In addition, when the cross-sectional area on the distal end side of the expanded portion of the pipe fitting portion is made smaller than the cross-sectional area on the base side, it is easy to insert the pipe fitting portion into the pipe-shaped mounting portion and the workability can be improved. Have
Here, the anti-slip portion is mounted at least at a position of the expanded portion of the pipe fitting portion that contacts the inner peripheral wall of the pipe-shaped mounting portion when the expanded portion is expanded. Moreover, even if the non-slip | skid part which consists of hard rubber | gum etc. is respectively attached to the outer peripheral surface of each expansion part, you may mount | wear with the non-slip | skid part which consists of a rubber ring which covers the outer peripheral surface of all the expansion parts. In addition, the anti-slip portion may be detachably attached to the outer peripheral surface of the expanding portion, whereby a pipe-like end portion of a bar-like object (bar) made of a pipe such as a handrail to which the pipe joint is attached, etc. Depending on the size of the pipe-shaped attachment portion, the anti-slip portion attached to the expansion portion can be exchanged. Furthermore, an anti-slip portion may be attached and fixed by forming an attachment fixing portion including a notch portion or a step portion for fixing the anti-slip portion at the attachment position of the anti-slip portion on the outer peripheral surface of the expanding portion. Thereby, it is possible to prevent the anti-slip portion from moving from a predetermined position during the mounting operation of the pipe joint.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
Hereinafter, a first embodiment of a pipe joint according to the present invention will be described with reference to the drawings.
FIG. 1 is an exploded cross-sectional view showing a main part of a male pipe joint of the pipe joint according to Embodiment 1, and FIG. 2 is a plan view of the pipe fitting part of FIG.
In the figure, 1 is a male pipe joint of the pipe joint in the first embodiment, 2 is a pipe-like attachment portion at the end of a rod-like object (bar) made of a pipe such as a handrail connected to other members, etc., 2a Is an inner peripheral wall of the pipe-shaped mounting part 2, 3 is a pipe fitting part formed in a columnar shape, 4 is a screwing hole part 4a drilled in substantially the center of the end surface on the one end part side of the pipe fitting part 3 Is a sliding portion formed in a conical shape or a truncated cone shape formed at the tip of the screw hole portion 4, 4 b is a screw portion of the screw hole portion 4, and 5 is the other end side of the pipe fitting portion 3. A slit formed in a cross shape or a trident from the end face of the pipe centering around the screw hole portion 4, 6 is formed with an outer periphery smaller than the diameter of the inner peripheral wall 2 a of the pipe-like mounting portion 2, and further divided into four by the slit 5. An expanded portion 7 of the pipe fitting portion 3 divided into two is formed on the one end side of the pipe fitting portion 3 so as to be coaxially enlarged. Male joint formed by the screw-like portion or the like on the peripheral surface, 8 expansion fasteners screwed into the screw hole portion 4, 8a is formed in a conical shape on the distal end side of the expansion fixture 8 An enlarged portion, 8b is a cylindrical portion provided continuously with the enlarged portion 8a, 8c is a screw groove portion formed in the cylindrical portion 8b, 9 is formed on an end face of the expanding fixture 8, and a rotating tool such as a hexagon wrench or a screwdriver is provided. It is an engaging part which consists of a hexagonal hole etc. which are fitted.
[0009]
A case where the male pipe joint of the pipe joint configured as described above is attached to the pipe-like attachment portion at the end of a rod-like object (bar) made of a pipe such as a handrail will be described below with reference to the drawings.
FIG. 3 is a cross-sectional view of the main part showing a state in which the male pipe joint of the pipe joint in the first embodiment is attached to the pipe-like attachment portion at the end of a rod-like object (bar) made of a pipe or the like.
The pipe fitting part 3 of the male pipe joint 1 is fitted to the pipe-like attachment part 2 at the end of a rod-like object (bar) made of pipes such as handrails, and then approximately the center of the pipe fitting part 3 The expansion fixture 8 is inserted into the threaded hole portion 4 formed in the hole, and a rotating tool such as a hexagon wrench or a screwdriver is engaged with the engaging portion 9 so that the screw groove portion 8c and the screw portion 4b are screwed together. As the expansion fixture 8 enters the screw hole 4 while being screwed, the expansion portion 8a and the cylindrical portion 8b of the expansion fixture 8 are inserted into the sliding portion 4a of the screw hole 4. The expanded portion 6 is expanded by the slit 5 and pressed against the inner peripheral wall 2a of the pipe-shaped mounting portion 2, and the pipe fitting portion 3 is fixed to the pipe-shaped mounting portion 2 as shown in FIG. A male joint 7 is formed at the end of the bar (bar).
[0010]
Since the male pipe joint of the pipe joint in Embodiment 1 is configured as described above, it has the following action.
A pipe-shaped mounting portion of the end portion of the stick-shaped material consisting of a pipe or the like of the handrail, etc. (bar), screwed pipe fitting portion expanding fixture fitted pipe fitting portion of the male pipe joint By simply screwing into the hole, the expanded portion of the pipe fitting portion can be expanded, the expanded portion can be pressed against the inner peripheral wall of the pipe-shaped mounting portion, and the pipe fitting portion can be fixed to the pipe-shaped mounting portion. It has the action.
Since it has a male joint part consisting of a screw-like part etc. on one end part side of the pipe fitting part, a pipe-like attachment part at the pipe-like end part of a bar-like object (bar) consisting of a pipe such as a handrail A male joint can be formed at the end of a rod-like object (bar) made of a pipe, etc. simply by fixing the pipe fitting part to the pipe, and the connection between rod-like objects (bars) made of a pipe or the like or to other members It has the effect | action that it can do easily.
Since the pipe fitting part is formed of a cylinder, the pressure contact surface between the inner peripheral wall of the pipe-like mounting part and the widened part is wide, and the pipe shape at the end of a rod-like object (bar) made of pipes such as handrails It has the effect | action that it can fix without rotating a pipe fitting part to an attaching part.
[0011]
(Embodiments 2 and 3)
Embodiments 2 and 3 of the pipe joint according to the present invention will be described below with reference to the drawings.
4 is an exploded cross-sectional view of a main part showing a female pipe joint of the pipe joint according to the second embodiment, FIG. 5 is a plan view of the pipe fitting portion, and FIG. 6 is a female joint of the pipe joint according to the third embodiment. FIG. 7 is an exploded cross-sectional view showing a main part of a pipe joint , and FIG. 7 is a plan view of a pipe fitting part. In addition, the same code | symbol is attached | subjected to the thing similar to Embodiment 1, and description is abbreviate | omitted.
In the figure, 10 is a female pipe joint of the pipe joint according to the second embodiment, 6a is a mounting fixing portion comprising a notched portion in which a predetermined portion of the outer peripheral surface of the end portion of each expanded portion 6 is notched, and 11 is a pipe fitting A nut-shaped female joint portion formed of a screw-like portion formed on the inner peripheral surface of one end portion side of the joint portion 3, 12 is a mounting fixing portion of each expansion portion 6 of the pipe fitting portion 3 A plurality of anti-slip portions made of hard rubber or the like each mounted and fixed to 6a, 13 is a female pipe joint of the pipe joint in Embodiment 3, and 6b is a step on the outer peripheral surface of the other end side of the pipe fitting portion 3. An attachment fixing portion 14 formed in a shape is a non-slip portion made of a rubber ring that is detachably attached to the attachment fixing portion 6 b and covers the outer peripheral surface of the pipe fitting portion 3.
Here, the attachment of the female pipe joints 10 and 13 to the pipe-like attachment portion 2 is the same as that of the first embodiment, and thus the description thereof is omitted.
[0012]
As described above, since the female pipe joint of the pipe joint in the second and third embodiments is configured, it has the following operation.
Since the non-slip part made of hard rubber or rubber ring is attached and fixed to the attachment fixing part formed on the outer peripheral surface of the end of the pipe fitting part, the pipe fitting part is fitted to the pipe-like attachment part. expanding when pressed against the fixed inner wall of the pipe-shaped mounting portion by expanding the expanding portion by fixture, is slip portion pressed against the inner wall of sliding friction becomes larger Te, the female pipe joints and pipe It has the effect | action that it can fix without rotating a shape attaching part. Further, by detachably mounting the anti-slip part made of hard rubber or rubber ring or the like in mounting the fixed part of the expanding portion, the size depending on the size of the pipe-shaped attaching part for attaching the female pipe joint of It has the effect | action that it can replace | exchange and use for different slip prevention parts, such as.
Further, since the female joint formed on one end of the pipe fitting portion is formed in a nut shape, a rod-like object made of a pipe such as a handrail to which the male pipe joint of the first embodiment is attached. When connecting to the (bar), each joint can be screwed together, from a pipe such as a handrail to which the male pipe joint of the first embodiment and the female pipe joint of the second or third embodiment are attached. It has an effect of stick-shaped material (the bar) between connectable made.
In addition, by simply attaching the pipe fitting part to a bar-shaped object (bar) made of pipes such as handrails, a plurality of bar-shaped objects (bars) can be connected via the pipe joint and curved in the length direction. The rod-shaped object (bar) having a portion also has an effect that it can be easily connected to other members.
[0013]
Next, a case where a plurality of rod-like objects (bars) made of pipes such as handrails are connected using the male pipe joint of the first embodiment and the female pipe joint of the second embodiment will be described below with reference to the drawings. I will explain.
FIG. 8 is an exploded plan view of the main part when connecting a plurality of bar-like objects (bars).
15a is a rod-shaped object (bar) with the male pipe joint 1 of the first embodiment or the female pipe joint 10 of the second embodiment attached to the end, and 15b is the male pipe joint 1 of the first embodiment at one end. Is a rod-shaped object (bar) having a curved portion in the length direction with the female pipe joint 10 according to Embodiment 2 attached to the other end.
As shown in FIG. 8, the male pipe joint 1 or the female pipe joint 10 is attached to the ends of the rods (bars) 15a and 15b, and the male and female joints of the rods (bars) 15a and 15b are opposed to each other. The parts 7 and 11 are screwed together to connect the rod-like objects (bars) 15a and 15b.
Incidentally, sticks (bars) 15b sticks to attach the male pipe joint 1 or female pipe joint 10 at both ends of the (bar) sticks connected to 15b (bar) 15a female pipe joint to an end of 10 or the male pipe joint 1 may be attached to connect the rod-like objects (bars) 15a and 15b. It is also possible to use a female pipe joint 13 in the third embodiment, instead of the female pipe joint 10.
[0014]
【The invention's effect】
As described above, according to the pipe joint of the present invention, the following excellent effects can be realized.
According to the invention of claim 1,
(1) The end of the pipe fitting part has a screw hole with a tip formed in a conical shape or a truncated cone in the approximate center of the end face, and screwed into the other end of the pipe fitting part. Since it has a slit that divides the pipe fitting part into a plurality of widened parts around the hole part, it is a pipe-like attachment part at the pipe-like end of a bar-like object (bar) made of pipes such as handrails Just by fitting the pipe fitting part to the screwing hole part and screwing the expansion fixing tool into the screwing hole part, the enlarged part or the cylindrical part of the expansion fixing tool is inserted into the sliding part of the screwing hole part. The slit of the pipe fitting part is expanded, and the expanded part can be pressed against the inner peripheral wall of the pipe-shaped mounting part and processed into the end of a bar-shaped object (bar) made of pipes such as handrails Pipe fittings such as the end of a bar (bar) made of pipes such as handrails can be easily fixed without adding Excellent workability of attachment work of the pipe joint.
(2) Since the male fitting part consisting of a screw-like part etc. is provided on one end of the pipe fitting part, the pipe fits into the pipe-like attachment part of a bar-like object (bar) consisting of a pipe such as a handrail. A joint can be formed at the end of a rod-like object (bar) made of pipes, etc., simply by fixing the joint with an expansion fixture, without processing the rod-like object (bar) as in the past. The joints of the pipe joints can be connected between bars (bars) and other members, and workability such as connection of bars (bars) made of pipes such as handrails is excellent.
(3) By simply attaching the pipe fitting part to the end of a bar-shaped object (bar) made of pipes such as handrails, a bar-shaped object (bar) made of a plurality of pipes can be arbitrarily connected at the joint. Also, a rod-shaped object (bar) having a curved portion in the length direction can be easily connected, and the workability at the time of connecting a rod-shaped object (bar) made of a pipe such as a handrail is excellent.
(4) When the pipe fitting part is formed of a cylinder, since the pressure contact surface between the inner peripheral wall of the pipe-like mounting part and the widened part is wide, it is a rod-shaped pipe made of a handrail without a bent part in the length direction. Even if it is fixed to the pipe-shaped mounting part such as the end of the object (bar), it can be securely fixed without rotating the bar-shaped object (bar) and the pipe fitting part. And it is excellent in safety when used for handrails.
(5) The pipe fitting portion is obtained by fitting the pipe fitting portion to the pipe-like attachment portion of a bar-like object (bar) made of pipes such as a handrail and screwing the expansion fixture into the screw hole portion. Can be attached to the pipe-like attachment part, and the pipe fitting part can be attached to the pipe-like attachment part with a small number of parts, and the productivity of the pipe joint is excellent with a simple structure.
(6) sticks comprising a synthetic resin or the like from the coated cladding on the surface even in the case of connecting the (bar) between the connection and the other resin member, a pipe fitting to a pipe-shaped mounting portion of the stick-shaped material (bar) The male part required to connect and connect the pipe joint to the pipe-shaped mounting part of a bar-shaped object (bar) simply by fitting the parts and pressing the expanded part against the inner peripheral wall of the pipe-shaped mounting part with the expansion fixture The shape or female joint can be formed into a rod-like object (bar), and it does not require welding of a joint part consisting of a flange part or the like to a rod-like object (bar) made of a cladding tube, The pipe joint can be attached with excellent workability, and can be attached without changing the quality of the cladding tube, thereby improving the attachment accuracy.
According to the invention described in claim 2, in addition to the effect of claim 1,
(7) Since a non-slip portion is provided on the outer peripheral surface of the expanded portion of the pipe fitting portion, the pipe-like attachment portion such as a pipe-like end portion of a rod-like object (bar) made of a pipe such as a handrail is used. When the pipe fitting part is fitted and the expansion fixture is screwed into the threaded hole part, and the expansion part is pressed against the inner peripheral wall of the pipe-like attachment part and pressed against the inner peripheral wall of the pipe-like attachment part, The anti-slip part abuts to increase the sliding friction between the inner peripheral wall of the pipe-like attachment part and the anti-slip part, and the rotation of the pipe-like attachment part and the pipe fitting part can be prevented, so that the Pipe joint can be fixed.
(8) When the cross-sectional area on the distal end side of the expanded part of the pipe fitting part is made smaller than the cross-sectional area on the base part side, it is easy to insert the pipe fitting part into the pipe-shaped attachment part and workability can be improved. .
[Brief description of the drawings]
1 is an exploded cross-sectional view of a main part showing a male pipe joint of a pipe joint in Embodiment 1. FIG. 2 is a plan view of a pipe fitting part in FIG. 1. FIG. 3 is a male pipe joint in Embodiment 1. principal indicating the sticks (bar) fragmentary cross-sectional view Figure 4 female pipe joint of the pipe joint of the second embodiment showing a state attached to the pipe-shaped mounting portion of the end portion of which becomes the shape pipe joint from the pipe or the like Partial exploded cross-sectional view [FIG. 5] Plan view of the pipe fitting portion [FIG. 6] Exploded sectional view of the main part showing the female pipe joint of the pipe joint in Embodiment 3. [FIG. 7] Plan view of the pipe fitting portion [ FIG. 8 is an exploded plan view of the main part when connecting a plurality of bar-like objects (bars).
DESCRIPTION OF SYMBOLS 1 Male pipe joint 2 Pipe-shaped attachment part 2a Inner peripheral wall 3 Pipe fitting part 4 Screwing hole part 4a Sliding part 4b Screw part 5 Slit 6 Widening part 6a Mounting fixing part 6b Mounting fixing part 7 Male joint part 8 Expanding fixture 8a Enlarged portion 8b Columnar portion 8c Screw groove portion 9 Engaging portion 10 Female pipe joint 11 Female joint portion 12 Non-slip portion 13 Female pipe joint 14 Non-slip portion 15a Bar-shaped object (bar)
15b Bar (Bar)

Claims

A pipe fitting portion formed in a columnar shape such as a cylinder or a prism, a screwing hole portion drilled in a substantially center of an end surface on one end portion side of the pipe fitting portion, and a tip portion of the screwing hole portion A sliding portion formed in a conical shape or a truncated cone shape, and an end surface on the other end side of the pipe fitting portion are divided around the screwing hole portion to form two or a plurality of widened portions 1 A male pipe joint having a plurality of slits, and a male joint formed with a screw-like portion on the outer peripheral surface on one end of the pipe fitting portion ;
A pipe fitting portion formed in a columnar shape such as a cylinder or a prism, a screwing hole portion drilled in a substantially center of an end surface on one end portion side of the pipe fitting portion, and a tip portion of the screwing hole portion A sliding portion formed in a conical shape or a truncated cone shape, and an end surface on the other end side of the pipe fitting portion are divided around the screwing hole portion to form two or a plurality of widened portions 1 Or a plurality of slits, and a female joint portion in which the outer peripheral diameter on one end side of the pipe fitting portion is a pipe shape having the same diameter as the outer peripheral diameter of a rod-like object made of a pipe or the like and a screw-like portion is formed on the inner peripheral wall A female pipe joint having,
A cylindrical portion having an enlarged portion formed in a conical shape or a truncated cone shape on the distal end side, continuously provided on the bottom surface side of the enlarged portion, a thread groove portion formed in the cylindrical portion, and an end surface of the cylindrical portion And an engaging portion that engages with a screwdriver or a wrench, and expands the expanding portion while being screwed into the screw hole portions of the male pipe joint and the female pipe joint. An open fixture,
A pipe joint characterized by comprising:

The expansion portion of the pipe fitting portion includes a non-slip portion made of an elastic member such as rubber attached to the outer peripheral surface, and / or the cross-sectional area on the distal end side of the expansion portion is the cross-sectional area on the base side The pipe joint according to claim 1, wherein the pipe joint is formed smaller.