JP4125895B2

JP4125895B2 - Pipe material lid and method of manufacturing the same

Info

Publication number: JP4125895B2
Application number: JP2002008239A
Authority: JP
Inventors: 和雄北浦
Original assignee: 有限会社ユース北浦
Priority date: 2002-01-17
Filing date: 2002-01-17
Publication date: 2008-07-30
Anticipated expiration: 2022-01-17
Also published as: JP2003207089A

Description

【０００１】
【発明の属する技術分野】
本発明は、パイプ材内部への雨水、異物等の侵入を防止するために、パイプ材の端部に取り付けられて該端部の開口を覆うパイプ材の蓋に関する。
【０００２】
【従来の技術】
図１は従来のこの種の金属製のパイプ材の蓋１を、パイプ材２に装着された状態で示している（なお、同様のパイプ材の蓋が実開昭６２−１４９６９７号に開示されている）。このパイプ材の蓋１は、ともに金属からなる外蓋３と内側嵌合材４とを有してなる。前記外蓋３は、屋根部３ａと、この屋根部３ａの周縁に設けられた周壁部３ｂとを一体的に有している。前記内側嵌合材４は、天井部４ａと、この天井部４ａの周縁から延びる側方部４ｂとを一体的に有している。前記外蓋３と前記内側嵌合材４とは、屋根部３ａの中央部と天井部４ａの中央部とをスポット溶接されることによって互いに結合されている（１０はスポット溶接部を示している）。
【０００３】
このようなパイプ材の蓋１は、内側嵌合材４の側方部４ｂをパイプ材２の端部の開口部に挿入して該側方部４ｂをパイプ材２の内周面に嵌合するのみで、パイプ材２に強固に取り付けることができる。そして、この取付状態では、パイプ材２の端部の周壁が外蓋３の周壁部３ｂと内側嵌合材４の側方部４ｂとの間に収容され、パイプ材２の開口部が外蓋３の屋根部３ａおよび周壁部３ｂによって外側からすっぽり覆われる。したがって、外部からの雨水や異物等を防止できる。
【０００４】
また、外蓋３と内側嵌合材４とが、屋根部３ａの中央部と天井部４ａの中央部とを一点でスポット溶接されることによって互いに結合されており、外蓋３および内側嵌合材４の他の部分は互いに結合されていないので、屋根部３ａと天井部４ａの外周側とが相互にある程度自由に動くことができ、ひいては外蓋３の周壁部３ｂと内側嵌合材４の側方部４ｂとが相互にある程度大きく動くことができるため、加工精度を高くしなくても、材料の弾性により加工のバラツキを吸収し、適正にパイプ材２に蓋１を取り付けることができる。また、同じ理由により、同一規格の蓋で、広範囲の厚さのパイプ材２に対して適応できる。
【０００５】
【発明が解決しようとする課題】
しかしながら、前記従来のパイプ材の蓋１においては、スポット溶接を行うので、製造コストが高くなるという問題があった。
【０００６】
また、肉眼では分からない溶接欠陥がスポット溶接部に生じ、外蓋３から内側嵌合材４が外れてしまうことがあるという問題があった。
【０００７】
また、外蓋３と内側嵌合材４とをスポット溶接により結合するので、外蓋３と内側嵌合材４とを結合する前に外蓋３および内側嵌合材４に対してメッキや塗装を行うことはできないという問題があった（メッキや塗装が行われていると、外蓋３と内側嵌合材４とをスポット溶接できない）。
【０００８】
また、外蓋３と内側嵌合材４とを結合した後、メッキや塗装を行う場合は（この場合、蓋１をパイプ材２に取り付ける前にメッキや塗装を行うこともあるし、パイプ材２への取付後、パイプ材２と一緒にメッキや塗装を行うこともある）、メッキや塗装の前処理として行われる洗浄処理に使用される水や薬液が屋根部３ａと天井部４ａとの重なり部に残存して乾かなかったり、メッキ液や塗料が屋根部３ａと天井部４ａとの重なり部に侵入しにくかったりするため、屋根部３ａと天井部４ａとの重なり部に対しメッキや塗装を良好に行うことができないという問題もあった。
【０００９】
本発明は、このような従来の事情に鑑みてなされたもので、本発明の１つの目的は、スポット溶接を行うことなく、外蓋と内側嵌合材とを結合でき、製造コストを低減することができるパイプ材の蓋およびその製造方法を提供することにある。
【００１０】
本発明の他の目的は、確実に十分な強度で外蓋と内側嵌合材とを結合できるパイプ材の蓋およびその製造方法を提供することにある。
【００１１】
本発明の他の目的は、外蓋と内側嵌合材とを結合する前に外蓋および内側嵌合材に対してメッキや塗装を行うこともできるパイプ材の蓋およびその製造方法を提供することにある。
【００１２】
本発明の他の目的は、外蓋と内側嵌合材とを結合後にメッキや塗装を行う場合も、屋根部と天井部との対向部に対しメッキや塗装を良好に行うことができるパイプ材の蓋およびその製造方法を提供することにある。
【００１３】
本発明のさらに他の目的は、以下の説明から明らかになろう。
【００１４】
【課題を解決するための手段】
第一の本発明によるパイプ材の蓋は、
屋根部と、この屋根部の周縁に設けられた周壁部と、前記屋根部にプレス加工により形成された内面側に突出する凸部とを一体的に有してなる金属からなる外蓋と、
天井部と、この天井部に設けられており、前記屋根部側に局部的に隆起するかしめ部隆起部と、このかしめ部隆起部に設けられた穴と、前記天井部の周縁から該天井部に対して大略垂直方向に折り曲げられて延びる側方部とを一体的に有してなる内側嵌合材とを有してなり、
前記外蓋と前記内側嵌合材とは、前記凸部を前記穴に挿通した後、前記凸部を加熱することなく塑性変形して前記屋根部と前記天井部とをかしめることにより、前記天井部が前記屋根部の内側に配置されるようにして、互いに結合されており、
前記内側嵌合材の前記側方部は前記外蓋の前記周壁部より内方に配置され、前記側方部と前記周壁部との間にパイプ材の端部周壁が収容されるようになっており、前記かしめ部隆起部が前記屋根部に当接されていることにより、前記屋根部と前記天井部との間に間隙が形成されているものである。
【００１５】
また、第二の本発明によるパイプ材の蓋は、
屋根部と、この屋根部の周縁に設けられた周壁部と、前記屋根部にプレス加工により形成された内面側に突出する凸部とを一体的に有してなる金属からなる外蓋と、
天井部と、この天井部に設けられており、前記屋根部側に局部的に隆起するかしめ部隆起部と、このかしめ部隆起部に設けられた凹部と、前記天井部の周縁から該天井部に対して大略垂直方向に折り曲げられて延びる側方部とを一体的に有してなる金属からなる内側嵌合材とを有してなり、
前記外蓋と前記内側嵌合材とは、前記凸部を前記凹部に嵌合するとともに前記凸部および前記凹部を加熱することなく塑性変形して前記屋根部と前記天井部とをかしめることにより、前記天井部が前記屋根部の内側に配置されるようにして、互いに結合されており、
前記内側嵌合材の前記側方部は前記外蓋の前記周壁部より内方に配置され、前記側方部と前記周壁部との間にパイプ材の端部周壁が収容されるようになっており、前記かしめ部隆起部が前記屋根部に当接されていることにより、前記屋根部と前記天井部との間に間隙が形成されているものである。
【００１６】
また、第一の本発明によるパイプ材の蓋の製造方法は、
外蓋と内側嵌合材とを有し、前記外蓋は金属からなり、屋根部と、この屋根部の周縁に設けられた周壁部とを一体的に有する一方、前記内側嵌合材は天井部と、この天井部の周縁から該天井部に対して大略垂直方向に折り曲げられて延びる側方部とを一体的に有し、前記外蓋と前記内側嵌合材とは、前記天井部が前記屋根部の内側に配置されるようにして互いに結合されており、前記内側嵌合材の前記側方部は前記外蓋の前記周壁部より内方に配置され、前記側方部と前記周壁部との間にパイプ材の端部周壁が収容されるようになっているパイプ材の蓋の製造方法において、
前記外蓋の前記屋根部に内面側に突出する凸部をプレス加工により一体的に形成する段階と、
前記内側嵌合材の前記天井部に、前記屋根部側に局部的に隆起するかしめ部隆起部を設ける段階と、
前記かしめ部隆起部に穴を設ける段階と、
前記凸部を前記穴に挿通した後、前記凸部を加熱することなく塑性変形して前記屋根部と前記天井部とをかしめることにより、前記外蓋と前記内側嵌合材とを互いに結合する段階とを有し、
前記かしめ部隆起部が前記屋根部に当接されるようにすることにより、前記外蓋と前記内側嵌合材とが結合された後、前記屋根部と前記天井部との間に間隙が形成されるようにするものである。
【００１７】
さらに、第二の本発明によるパイプ材の蓋の製造方法は、
外蓋と内側嵌合材とを有し、前記外蓋は金属からなり、屋根部と、この屋根部の周縁に設けられた周壁部とを一体的に有する一方、前記内側嵌合材は金属からなり、天井部と、この天井部の周縁から該天井部に対して大略垂直方向に折り曲げられて延びる側方部とを一体的に有し、前記外蓋と前記内側嵌合材とは、前記天井部が前記屋根部の内側に配置されるようにして互いに結合されており、前記内側嵌合材の前記側方部は前記外蓋の前記周壁部より内方に配置され、前記側方部と前記周壁部との間にパイプ材の端部周壁が収容されるようになっているパイプ材の蓋の製造方法において、
前記外蓋の前記屋根部に内面側に突出する凸部をプレス加工により一体的に形成する段階と、
前記内側嵌合材の前記天井部に、前記屋根部側に局部的に隆起するかしめ部隆起部を設ける段階と、
前記かしめ部隆起部に凹部を設ける段階と、
前記凸部を前記凹部に嵌合するとともに前記凸部および前記凹部を加熱することなく塑性変形して前記屋根部と前記天井部とをかしめることにより、前記外蓋と前記内側嵌合材とを互いに結合する段階とを有し、
前記かしめ部隆起部が前記屋根部に当接されるようにすることにより、前記外蓋と前記内側嵌合材とが結合された後、前記屋根部と前記天井部との間に間隙が形成されるようにするものである。
【００１８】
本発明によれば、スポット溶接を行うことなく、かしめ作業により外蓋と内側嵌合材とを結合するので、パイプ材の蓋の製造コストを低減することができる。
【００１９】
また、溶接によらず、かしめにより外蓋と内側嵌合材とを結合するので、確実に十分な強度で外蓋と内側嵌合材とを結合できる。
【００２０】
また、外蓋と内側嵌合材とをねじ止めする場合のように外蓋に穴を明ける必要はないので、外蓋と内側嵌合材との結合部から雨水や異物等がパイプ材内に侵入する虞もない。
【００２１】
また、かしめにより外蓋と内側嵌合材とを結合するので、外蓋と内側嵌合材とを結合する前に外蓋および内側嵌合材に対してメッキや塗装を行うこともできるようになる。
【００２２】
また、屋根部側に局部的に隆起するかしめ部隆起部を天井部に設け、このかしめ部隆起部に前記穴または凹部を明け、前記かしめ部隆起部が屋根部に当接されるようにすることにより、屋根部と天井部との間に間隙が確実に形成されるようにするので、外蓋と内側嵌合材とを結合後にメッキや塗装を行う場合も、屋根部と天井部との対向部に対しメッキや塗装を良好に行うことができるようになる。
【００２３】
さらに、屋根部側に局部的に隆起する非かしめ部隆起部を天井部のうちの前記穴または凹部から離れた位置に設け、前記非かしめ部隆起部が屋根部に当接されることにより屋根部と天井部との間に確実に間隙が形成されるようにすることによっても、外蓋と内側嵌合材とを結合後にメッキや塗装を行う場合も、屋根部と天井部との対向部に対しメッキや塗装を良好に行うことができるようになる。
【００２４】
【発明の実施の形態】
以下、本発明を図面に示す実施例に基づいて説明する。
【００２５】
【実施例】
図２〜１１は、本発明を横断面円形の丸パイプ材用のパイプ材の蓋１に適用した本発明の第一実施例を示している。このうち、図２および３は、内側嵌合材４と結合する前の外蓋３を示しており、鋼板、アルミ合金板等の金属板をプレス加工により一体成形してなり、大略円形をなすとともに緩やかに球面状に湾曲されている屋根部３ａと、この屋根部３ａの周縁から該屋根部３ａに対し垂直に近い方向に折り曲げられて短い円筒状をなす周壁部３ｂとを一体的に有している。前記屋根部３ａの中央部には、大略円柱状の凸部３ｃがプレス加工により一体的に形成されており、この凸部３ｃは内側に突出している。なお、前記凸部３ｃをプレス加工する際、屋根部３ａの外面になるべく凹部ないしは陥没部分が生じないようにすることが好ましい（これは、パイプ材の蓋１が完成後、当該凹部ないしは陥没部分に雨水等が溜まらないようにするためである）。前記周壁部３ｂには、内側に突出する点状の突起部３ｅが適当数設けられている。
【００２６】
図４〜６は、外蓋３と結合する前の内側嵌合材４を示しており、鋼板、アルミ合金板等の金属板をプレス加工により一体成形してなり、天井部４ａと側方部４ｂとを一体的に有している。前記天井部４ａは、大略円形をなすとともに、緩やかに球面状に湾曲されており、その中央部には外面側（外蓋３側となる側）に局部的に隆起する大略円形状のかしめ部隆起部４ｃが一体的に形成されている。このかしめ部隆起部４ｃの中央部には、凸部３ｃの外径に対応する径を有する穴４ｄが明けられている。また、前記天井部４ａのうちの穴４ｄから離れた位置には、外面側（外蓋３側となる側）に局部的に隆起する大略半球状の非かしめ部隆起部４ｅが適当数一体的に設けられている。
【００２７】
前記側方部４ｂは、天井部４ａの周縁から該天井部４ａに対して大略垂直方向に折り曲げられて大略円筒状をなしているが、天井部４ａと反対側の端部から天井部４ａ付近にまで延びる複数（具体的には３つ）の切り込み４ｆを設けられることにより、実質的に複数（具体的には３つ）の部分に分割されている。また、前記側方部４ｂの軸方向中央部は、切り込み４ｆ部分を除く全周に渡って、外側に突出する突出部４ｇを形成している。
【００２８】
次に、本実施例における外蓋３と内側嵌合材４との結合過程を説明する。図７のように外蓋３の凸部３ｃを内側嵌合材４の穴４ｄに挿通し、天井部４ａが屋根部３ａの内側に重ね合わされた状態とする。続いて、プレス機械、かしめ機等により凸部３ｃを軸方向に圧縮して、図８および９に示されるように凸部３ｃのうちの穴４ｄを通過した部分を扁平となるように塑性変形し、この塑性変形部分３ｄと屋根部３ａとの間に天井部４ａのかしめ部隆起部４ｃを挾持させて屋根部３ａと天井部４ａとをかしめることにより、外蓋３と内側嵌合材４とを互いに結合する。これにより、パイプ材の蓋１が完成する。この完成状態において、内側嵌合材４の側方部４ｂは外蓋３の周壁部３ｂより内方に配置されており、側方部４ｂと周壁部３ｂとの間には間隙５が形成される。図１０は、完成状態のパイプ材の蓋１の正面図を示している。
【００２９】
このパイプ材の蓋１１は、図１１のように、側方部４ｂを横断面円形の丸パイプ材２の端部の開口部に挿入して該側方部４ｂをパイプ材２の内周面に嵌合するのみで、パイプ材２に取り付けることができる（このとき、側方部４ｂの突出部４ｇがパイプ材２の内周面に強く押圧され、側方部４ｂが若干内方に弾性変形した状態となる）。そして、この取付状態では、パイプ材２の端部の周壁が外蓋３の周壁部３ｂと内側嵌合材４の側方部４ｂとの間に収容され、パイプ材２の開口部が外蓋３の屋根部３ａおよび周壁部３ｂによって外側からすっぽり覆われる。したがって、外部からの雨水や異物等が侵入を防止することができる。ただし、外蓋３の突起部３ｅがパイプ材２の外周に当接することにより、外蓋３の周壁部３ｂの内周面とパイプ材の外周面との間には間隙が形成される。
【００３０】
このパイプ材の蓋１は、スポット溶接を行うことなく、かしめ作業により外蓋３と内側嵌合材４とを結合できるので、製造コストを低減することができる。
【００３１】
また、溶接によらず、かしめにより外蓋３と内側嵌合材４とを結合するので、確実に十分な強度で外蓋３と内側嵌合材４とを結合できる。
【００３２】
また、外蓋３と内側嵌合材４とをねじ止めする場合のように外蓋３に穴を明ける必要はないので、外蓋３と内側嵌合材４との結合部から雨水や異物等がパイプ材内に侵入する虞もない。
【００３３】
また、外蓋３の屋根部３ａの中央部に凸部３ｃを形成する工程において、屋根部３ａに凹部ないしは陥没部分が生じてしまっている場合も、前記かしめ作業工程により、その凹部ないしは陥没部分をなくしたり、小さくなるようにすることができる。
【００３４】
また、かしめにより外蓋３と内側嵌合材４とを結合するので、外蓋３と内側嵌合材４とを結合する前に外蓋３および内側嵌合材４に対してメッキや塗装を行うこともできるようになる。
【００３５】
また、もし外蓋３と内側嵌合材４とが相対的に完全に動けないとすると、外蓋３の周壁部３ｂと内側嵌合材４の側方部４ｂとの間の間隙５の加工精度を高くしないと、蓋１をパイプ材２に取り付けることができないこともある。しかしながら、本実施例では、外蓋３と内側嵌合材４とが、屋根部３ａおよび天井部４ａの中央部の一点でかしめ結合されており、外蓋３および内側嵌合材４の他の部分は互いに結合されていないので、屋根部３ａと天井部４ａの外周側とが相互にある程度自由に動くことができ、ひいては外蓋３の周壁部３ｂと内側嵌合材４の側方部４ｂとが相互にある程度大きく動くことができるため、加工精度を高くしなくても、材料の弾性により加工のバラツキを吸収し、適正にパイプ材２に蓋１を取り付けることができる。また、同じ理由により、同一規格の蓋１で、広範囲の厚さのパイプ材２に対して適応できる。
【００３６】
ただし、本発明においては、結合強度等の必要に応じて、屋根部３ａと天井部４ａにそれぞれ複数の凸部３ｃと穴４ｄを設けることにより、屋根部３ａと天井部４ａとを複数箇所においてかしめてもよい。
【００３７】
また、屋根部３ａ側に局部的に隆起するかしめ部隆起部４ｃが天井部４ａに設けられ、このかしめ部隆起部４ｃに穴４ｄが明けられており、該かしめ部隆起部４ｃが屋根部３ａに当接されていること、および天井部４ａのうちの穴４ｄから離れた位置に屋根部３ａ側に局部的に隆起する非かしめ部隆起部４ｅが設けられ、これらの非かしめ部隆起部４ｅが屋根部３ａに当接されることにより、屋根部３ａと天井部４ａとの間に間隙６が確実に形成されるため、メッキや塗装の前処理として行われる洗浄処理に使用される水や薬液が屋根部３ａと天井部４ａとの対向部に残存して乾かないような不都合を防止できるとともに、メッキ液や塗料が屋根部３ａと天井部４ａとの対向部に容易に侵入できるので、外蓋３と内側嵌合材４とを結合後にメッキや塗装を行う場合も、屋根部３ａと天井部４ａとの対向部に対しメッキや塗装を良好に行うことができるようになる。
【００３８】
さらに本実施例においては、外蓋３の突起部３ｅがパイプ材２の外周に当接し、外蓋３の周壁部３ｂの内周面とパイプ材２の外周面との間に確実に間隙が形成されるようにするので、パイプ材２に取り付けた状態で蓋１をパイプ材２とともにメッキや塗装を行う場合、これらのメッキや塗装を良好に行うことができる。
【００３９】
なお、本発明において、凸部３ｃの塑性変形の態様は図に示したような態様に限られないし、凸部３ｃに作用させる力の方向も必ずしも軸方向に限定されることはない。要するに、屋根部３ａと天井部４ａとが結合されればよい。
【００４０】
図１２は、本発明の第一参考例を示している。本参考例の構成は、外蓋３に突起部３ｅが設けられていないこと、内側嵌合材４にかしめ部隆起部４ｃおよび非かしめ部隆起部４ｅが設けられていないことを除いて、前記第一実施例の構成と同様である。本参考例においても、突起部３ｅ、かしめ部隆起部４ｃおよび非かしめ部隆起部４ｅが設けられていることによる作用効果を除いて、前記第一実施例と同様の作用効果を得ることができる。
【００４１】
図１３〜１６は、本発明の第二実施例を示している。本実施例においては、図１３に示されるように、外蓋３に結合する前、内側嵌合材４の天井部４ａの中央部には、外蓋３の凸部３ｃに対応する形状および大きさの凹部４ｈがプレス加工により一体的に形成されている。内側嵌合材４の結合前の他の構成および外蓋３の構成は、前記第一実施例の場合と同様である。
【００４２】
本実施例においては、図１３のように外蓋３の凸部３ｃを内側嵌合材４の凹部４ｈに嵌合し、天井部４ａが屋根部３ａの内側に重ね合わされた状態とする。続いて、プレス機械、かしめ機等により凸部３ｃを軸方向に圧縮して、図１４および１５に示されるように凸部３ｃおよび凹部４ｈを扁平となるように塑性変形して屋根部３ａと天井部４ａとをかしめることによって外蓋３と内側嵌合材４とを互いに結合する。これにより、パイプ材の蓋１が完成する。この完成状態において、前記第一実施例の場合と同様に、内側嵌合材４の側方部４ｂは外蓋３の周壁部３ｂより内方に配置されており、側方部４ｂと周壁部３ｂとの間にはパイプ材２の端部周壁を収容するための間隙５が形成される。
【００４３】
本実施例においても、図１６に示されるように、前記第一実施例の場合と同様にパイプ材２に取り付けでき、前記第一実施例の場合と同様の効果を得ることができる。
【００４４】
なお、本発明において、凸部３ｃおよび凹部４ｈの塑性変形の態様は図に示したような態様に限られないし、凸部３ｃおよび凹部４ｈに作用させる力の方向も必ずしも軸方向に限定されることはない。要するに、屋根部３ａと天井部４ａとが結合されればよい。
【００４５】
図１７は、本発明の第二参考例を示している。本参考例の構成は、外蓋３に突起部３ｅが設けられていないこと、内側嵌合材４にかしめ部隆起部４ｃおよび非かしめ部隆起部４ｅが設けられていないことを除いて、前記図１３〜１６の第二実施例の構成と同様である。本参考例においても、突起部３ｅ、かしめ部隆起部４ｃおよび非かしめ部隆起部４ｅが設けられていることによる作用効果を除いて、前記第一実施例と同様の作用効果を得ることができる。
【００４６】
なお、本発明においては、外蓋３および内側嵌合材４の形状は、前記各実施例のような形状に限られない。また、前記各実施例は本発明を横断面円形をなす丸パイプ材用のパイプ材の蓋に適用した例であるが、本発明は横断面が四角形等の角形をなす角パイプ材用のパイプ材の蓋にも適用できるものである。
【００４７】
【発明の効果】
以上のように本発明は、
（イ）スポット溶接を行うことなく、外蓋と内側嵌合材とを結合でき、製造コストを低減することができる、
（ロ）確実に十分な強度で外蓋と内側嵌合材とを結合できる、
（ハ）外蓋と内側嵌合材とを結合する前に外蓋および内側嵌合材に対してメッキや塗装を行うこともできるようになる、
（ニ）屋根部側に隆起するかしめ部隆起部を天井部に設け、このかしめ部隆起部に穴または凹部を明け、かしめ部隆起部が屋根部に当接されるようにしたり、屋根部側に隆起する非かしめ部隆起部を天井部のうちの穴または凹部から離れた位置に設け、非かしめ部隆起部が屋根部に当接されるようにすることにより、屋根部と天井部との間に確実に間隙が形成されるようにすることができ、それにより、外蓋と内側嵌合材とを結合後にメッキや塗装を行う場合も、屋根部と天井部との対向部に対しメッキや塗装を良好に行うことができるようになる、
等の優れた効果を得られるものである。
【図面の簡単な説明】
【図１】従来のパイプ材の蓋をパイプ材に装着された状態で示す断面図である。
【図２】本発明の第一実施例における内側嵌合材と結合する前の外蓋を示す縦断面図である。
【図３】前記第一実施例における内側嵌合材と結合する前の外蓋を示す底面図である。
【図４】前記第一実施例における外蓋と結合する前の内側嵌合材を示す縦断面図である。
【図５】前記第一実施例における外蓋と結合する前の内側嵌合材を示す平面図である。
【図６】前記第一実施例における外蓋と結合する前の内側嵌合材を示す底面図である。
【図７】前記第一実施例の製造工程において外蓋の凸部を内側嵌合材の穴に挿通した状態を示す縦断面図である。
【図８】前記第一実施例におけるパイプ材の蓋の完成状態を示す縦断面図である。
【図９】前記第一実施例におけるパイプ材の蓋の完成状態を示す底面図である。
【図１０】前記第一実施例におけるパイプ材の蓋の完成状態を示す正面図である。
【図１１】前記第一実施例のパイプ材の蓋をパイプ材に取り付けた状態を示す縦断面図である。
【図１２】本発明の第一参考例のパイプ材の蓋をパイプ材に取り付けた状態で示す縦断面図である。
【図１３】本発明の第二実施例の製造工程において外蓋の凸部を内側嵌合材の凹部に嵌合した状態を示す縦断面図である。
【図１４】前記第二実施例におけるパイプ材の蓋の完成状態を示す縦断面図である。
【図１５】前記第二実施例におけるパイプ材の蓋の完成状態を示す底面図である。
【図１６】前記第二実施例のパイプ材の蓋をパイプ材に取り付けた状態を示す縦断面図である。
【図１７】本発明の第二参考例のパイプ材の蓋を示す縦断面図である。
【符号の説明】
１パイプ材の蓋
２パイプ材
３外蓋
３ａ屋根部
３ｂ周壁部
３ｃ凸部
４内側嵌合材
４ａ天井部
４ｂ側方部
４ｃかしめ部隆起部
４ｄ穴
４ｅ非かしめ部隆起部
４ｈ凹部
６間隙[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe material lid that is attached to an end portion of a pipe material and covers an opening of the end portion in order to prevent rainwater, foreign matter, and the like from entering the inside of the pipe material.
[0002]
[Prior art]
FIG. 1 shows a conventional metal pipe material cover 1 of this type in a state of being attached to a pipe material 2 (a similar pipe material cover is disclosed in Japanese Utility Model Laid-Open No. 62-149697). ing). The pipe material lid 1 has an outer lid 3 and an inner fitting material 4 both made of metal. The outer lid 3 integrally includes a roof portion 3a and a peripheral wall portion 3b provided on the periphery of the roof portion 3a. The inner fitting member 4 integrally includes a ceiling portion 4a and a side portion 4b extending from the periphery of the ceiling portion 4a. The outer lid 3 and the inner fitting member 4 are joined to each other by spot welding the center portion of the roof portion 3a and the center portion of the ceiling portion 4a (10 indicates a spot weld portion). ).
[0003]
In such a pipe material lid 1, the side portion 4 b of the inner fitting material 4 is inserted into the opening of the end portion of the pipe material 2, and the side portion 4 b is fitted to the inner peripheral surface of the pipe material 2. Only by doing, it can attach to the pipe material 2 firmly. In this attached state, the peripheral wall at the end of the pipe member 2 is accommodated between the peripheral wall portion 3b of the outer lid 3 and the side portion 4b of the inner fitting member 4, and the opening of the pipe member 2 is the outer lid. 3 of the roof 3a and the peripheral wall 3b are completely covered from the outside. Therefore, it is possible to prevent rainwater and foreign matters from the outside.
[0004]
Further, the outer lid 3 and the inner fitting material 4 are coupled to each other by spot welding the central portion of the roof portion 3a and the central portion of the ceiling portion 4a at one point. Since the other parts of the material 4 are not coupled to each other, the roof portion 3a and the outer peripheral side of the ceiling portion 4a can freely move to each other to some extent. As a result, the peripheral wall portion 3b of the outer lid 3 and the inner fitting material 4 The side portions 4b of the steel plate can move to a certain extent to each other, so that the processing variation can be absorbed by the elasticity of the material and the lid 1 can be properly attached to the pipe material 2 without increasing the processing accuracy. . For the same reason, it can be applied to the pipe material 2 having a wide range of thicknesses with the same standard lid.
[0005]
[Problems to be solved by the invention]
However, since the conventional pipe material lid 1 is spot-welded, there is a problem in that the manufacturing cost increases.
[0006]
Further, there is a problem that a welding defect that cannot be seen with the naked eye occurs in the spot welded portion, and the inner fitting material 4 may come off from the outer lid 3.
[0007]
Further, since the outer lid 3 and the inner fitting material 4 are joined by spot welding, the outer lid 3 and the inner fitting material 4 are plated or painted before the outer lid 3 and the inner fitting material 4 are joined. There is a problem that the outer lid 3 and the inner fitting material 4 cannot be spot welded when plating or painting is performed.
[0008]
When the outer lid 3 and the inner fitting material 4 are joined and then plated or painted (in this case, plating or painting may be performed before the lid 1 is attached to the pipe material 2, After mounting to 2, plating and painting may be performed together with the pipe material 2), and water and chemicals used for cleaning treatment performed as pretreatment for plating and painting may occur between the roof portion 3 a and the ceiling portion 4 a. Since it remains in the overlapped portion and does not dry, or the plating solution or paint does not easily enter the overlapped portion of the roof portion 3a and the ceiling portion 4a, the overlapping portion of the roof portion 3a and the ceiling portion 4a is plated or painted. There was also a problem that it could not be performed well.
[0009]
The present invention has been made in view of such a conventional situation, and one object of the present invention is to couple the outer lid and the inner fitting material without performing spot welding, thereby reducing the manufacturing cost. An object of the present invention is to provide a lid for a pipe material and a method for manufacturing the same.
[0010]
Another object of the present invention is to provide a pipe cover and a method for manufacturing the same that can reliably connect the outer cover and the inner fitting member with sufficient strength.
[0011]
Another object of the present invention is to provide a lid for a pipe material and a method for manufacturing the same, which can be plated or painted on the outer lid and the inner fitting material before the outer lid and the inner fitting material are joined. There is.
[0012]
Another object of the present invention is to provide a pipe material capable of satisfactorily plating and coating the facing portion between the roof portion and the ceiling portion even when plating or painting is performed after the outer lid and the inner fitting material are joined. And providing a method for manufacturing the same.
[0013]
Still other objects of the present invention will become apparent from the following description.
[0014]
[Means for Solving the Problems]
The pipe material lid according to the first aspect of the present invention comprises:
An outer cover made of a metal integrally having a roof part, a peripheral wall part provided on a peripheral edge of the roof part, and a convex part projecting to the inner surface side formed by pressing the roof part ;
A ceiling portion, a caulking portion bulging portion that is locally raised on the roof portion side, a hole provided in the caulking portion bulging portion, and a peripheral portion of the ceiling portion. An inner fitting material integrally formed with a side portion that is bent and extended in a substantially vertical direction .
And the outer cover wherein the inner fitting member, before after inserting the Kitotsu portion before Kiana, by caulking and plastically deformed the roof and the ceiling without heating the protrusion The ceiling part is coupled to each other such that the ceiling part is disposed inside the roof part,
The side portion of the inner fitting member is disposed inward from the peripheral wall portion of the outer lid, and an end peripheral wall of the pipe material is accommodated between the side portion and the peripheral wall portion. In addition , a gap is formed between the roof portion and the ceiling portion by the caulking portion raised portion being in contact with the roof portion .
[0015]
Moreover, the lid of the pipe material according to the second invention is
An outer cover made of a metal integrally having a roof part, a peripheral wall part provided on a peripheral edge of the roof part, and a convex part projecting to the inner surface side formed by pressing the roof part ;
A ceiling portion, a caulking portion bulging portion locally raised on the roof portion side, a concave portion provided in the caulking portion bulging portion, and a ceiling portion from the periphery of the ceiling portion An inner fitting material made of a metal integrally formed with a side portion that is bent and extended in a substantially vertical direction .
And the outer cover wherein the inner fitting member, either before said roof portion plastically deformed without heating the projections and the recesses with fitting the Kitotsu portion before Symbol recess and said ceiling section By tightening, the ceiling part is connected to each other so that it is arranged inside the roof part,
The side portion of the inner fitting member is disposed inward from the peripheral wall portion of the outer lid, and an end peripheral wall of the pipe material is accommodated between the side portion and the peripheral wall portion. In addition , a gap is formed between the roof portion and the ceiling portion by the caulking portion raised portion being in contact with the roof portion .
[0016]
Moreover, the manufacturing method of the lid | cover of the pipe material by 1st this invention is the following.
An outer lid and an inner fitting material, and the outer lid is made of metal, and integrally includes a roof portion and a peripheral wall portion provided at a peripheral edge of the roof portion, while the inner fitting material is a ceiling. And a side part that is bent and extended in a substantially vertical direction with respect to the ceiling part from the periphery of the ceiling part , and the outer cover and the inner fitting member are It is mutually connected so that it may be arrange | positioned inside the said roof part, The said side part of the said inner fitting material is arrange | positioned inside the said surrounding wall part of the said outer cover, The said side part and the said surrounding wall In the manufacturing method of the pipe material lid in which the end peripheral wall of the pipe material is accommodated between the parts,
A step of integrally forming a convex portion protruding to the inner surface side on the roof portion of the outer lid by pressing ;
On the ceiling portion of the inner fitting material, providing a caulking portion raised portion that locally rises on the roof portion side;
Providing a hole in the caulking portion raised portion ;
After inserting the convex portion prior Kiana, by caulking and plastically deformed the roof and the ceiling without heating the convex portions, each other and the outer lid and the inner fitting member Combining, and
A gap is formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by causing the caulking portion raised portion to contact the roof portion. It is intended to be done.
[0017]
Furthermore, the manufacturing method of the lid | cover of the pipe material by 2nd this invention,
An outer lid and an inner fitting material, and the outer lid is made of metal, and integrally includes a roof portion and a peripheral wall portion provided at a peripheral edge of the roof portion. And integrally having a ceiling portion and a side portion extending from the periphery of the ceiling portion by being bent in a substantially vertical direction with respect to the ceiling portion , and the outer lid and the inner fitting material, The ceiling portions are coupled to each other so as to be disposed inside the roof portion, and the side portions of the inner fitting material are disposed inward from the peripheral wall portion of the outer lid, and the side portions In the method of manufacturing the lid of the pipe material in which the end peripheral wall of the pipe material is accommodated between the part and the peripheral wall part,
A step of integrally forming a convex portion protruding to the inner surface side on the roof portion of the outer lid by pressing ;
On the ceiling portion of the inner fitting material, providing a caulking portion raised portion that locally rises on the roof portion side;
Providing a recess in the caulking portion raised portion ;
By caulking the plastically deformed the roof and the ceiling without heating the projections and the recesses as well as fitting the convex portion prior Symbol recess, the said outer lid inner insert members And bonding each other ,
A gap is formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by causing the caulking portion raised portion to contact the roof portion. It is intended to be done.
[0018]
According to the present invention, since the outer lid and the inner fitting material are joined by caulking work without performing spot welding, the manufacturing cost of the pipe material lid can be reduced.
[0019]
Further, since the outer lid and the inner fitting material are joined by caulking without being welded, the outer lid and the inner fitting material can be reliably joined with sufficient strength.
[0020]
In addition, there is no need to make a hole in the outer lid as in the case of screwing the outer lid and the inner fitting material, so rainwater, foreign matter, etc. enter the pipe material from the joint between the outer lid and the inner fitting material. There is no risk of intrusion.
[0021]
In addition, since the outer lid and the inner fitting material are joined by caulking, the outer lid and the inner fitting material can be plated or painted before joining the outer lid and the inner fitting material. Become.
[0022]
Further, a caulking portion bulging portion that locally bulges on the roof portion side is provided in the ceiling portion, and the hole or the concave portion is formed in the caulking portion bulging portion so that the caulking portion bulging portion comes into contact with the roof portion. by, even when performing the gap reliably formed by way be Runode, plating and the outer lid and the inner fitting member after binding coating between the roof and the ceiling, the roof and the ceiling portion It is possible to satisfactorily perform plating and coating on the facing portion of the plate.
[0023]
Furthermore, a non-caulking portion bulging portion that locally bulges on the roof portion side is provided at a position away from the hole or recess in the ceiling portion, and the non-caulking portion bulging portion is brought into contact with the roof portion so that the roof The gap between the roof and the ceiling can be ensured by ensuring that a gap is formed between the roof and the ceiling, or when plating or painting is performed after the outer lid and the inner fitting material are joined. In contrast, plating and painting can be performed satisfactorily.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
[0025]
【Example】
2 to 11 show a first embodiment of the present invention in which the present invention is applied to a pipe cover 1 for a round pipe having a circular cross section. Of these, FIGS. 2 and 3 show the outer lid 3 before being joined to the inner fitting member 4, which is formed by integrally forming a metal plate such as a steel plate or an aluminum alloy plate by pressing, and forms a substantially circular shape. In addition, a roof portion 3a that is gently curved into a spherical shape and a peripheral wall portion 3b that is bent from the periphery of the roof portion 3a in a direction perpendicular to the roof portion 3a to form a short cylindrical shape are integrally provided. is doing. A substantially cylindrical convex portion 3c is integrally formed by pressing at the center of the roof portion 3a, and the convex portion 3c protrudes inward. In addition, when pressing the convex portion 3c, it is preferable to prevent a concave portion or a depressed portion from being formed on the outer surface of the roof portion 3a as much as possible (this is the concave portion or the depressed portion after the pipe material cover 1 is completed). In order to prevent rainwater etc. from collecting in the water). The peripheral wall 3b is provided with an appropriate number of dot-like protrusions 3e protruding inward.
[0026]
4 to 6 show the inner fitting material 4 before being joined to the outer lid 3, which is formed by integrally forming a metal plate such as a steel plate or an aluminum alloy plate by pressing, and has a ceiling portion 4a and a side portion. 4b integrally. The ceiling portion 4a has a substantially circular shape and is gently curved into a spherical shape, and a substantially circular caulking portion that locally protrudes on the outer surface side (the side on the outer lid 3 side) at the center portion thereof. The raised portion 4c is integrally formed. A hole 4d having a diameter corresponding to the outer diameter of the convex portion 3c is formed in the center portion of the caulking portion raised portion 4c. Further, an appropriate number of substantially hemispherical non-caulking bulging portions 4e that locally bulge on the outer surface side (the side that becomes the outer lid 3 side) are integrally formed at a position away from the hole 4d in the ceiling portion 4a. Provided.
[0027]
The side part 4b is bent in a substantially vertical direction with respect to the ceiling part 4a from the periphery of the ceiling part 4a to form a substantially cylindrical shape, but from the end opposite to the ceiling part 4a to the vicinity of the ceiling part 4a By providing a plurality of (specifically, three) cuts 4f extending up to, the portion is substantially divided into a plurality of (specifically, three) portions. Further, the central portion in the axial direction of the side portion 4b forms a protruding portion 4g that protrudes outward over the entire circumference excluding the notch 4f portion.
[0028]
Next, the coupling process between the outer lid 3 and the inner fitting member 4 in this embodiment will be described. As shown in FIG. 7, the convex portion 3c of the outer lid 3 is inserted into the hole 4d of the inner fitting member 4, and the ceiling portion 4a is overlapped with the inner side of the roof portion 3a. Subsequently, the convex portion 3c is compressed in the axial direction by a press machine, a caulking machine, or the like, and plastic deformation is performed so that the portion of the convex portion 3c that has passed through the hole 4d becomes flat as shown in FIGS. The caulking portion raised portion 4c of the ceiling portion 4a is clamped between the plastic deformation portion 3d and the roof portion 3a to caulk the roof portion 3a and the ceiling portion 4a, whereby the outer lid 3 and the inner fitting material are 4 to each other. Thereby, the lid 1 of the pipe material is completed. In this completed state, the side part 4b of the inner fitting member 4 is disposed inward from the peripheral wall part 3b of the outer lid 3, and a gap 5 is formed between the side part 4b and the peripheral wall part 3b. The FIG. 10 shows a front view of the pipe material lid 1 in a completed state.
[0029]
As shown in FIG. 11, the pipe material lid 11 is formed by inserting the side part 4 b into the opening of the end part of the round pipe material 2 having a circular cross section and inserting the side part 4 b into the inner peripheral surface of the pipe material 2. Can be attached to the pipe material 2 (at this time, the protruding portion 4g of the side portion 4b is strongly pressed against the inner peripheral surface of the pipe material 2, and the side portion 4b is slightly inwardly elastic. Will be in a deformed state). In this attached state, the peripheral wall at the end of the pipe member 2 is accommodated between the peripheral wall portion 3b of the outer lid 3 and the side portion 4b of the inner fitting member 4, and the opening of the pipe member 2 is the outer lid. 3 of the roof 3a and the peripheral wall 3b are completely covered from the outside. Therefore, rainwater, foreign matter, etc. from the outside can be prevented from entering. However, a gap is formed between the inner peripheral surface of the peripheral wall portion 3b of the outer lid 3 and the outer peripheral surface of the pipe material by the protrusion 3e of the outer lid 3 coming into contact with the outer periphery of the pipe material 2.
[0030]
Since the pipe cover 1 can be coupled to the outer cover 3 and the inner fitting member 4 by caulking without spot welding, the manufacturing cost can be reduced.
[0031]
Further, since the outer lid 3 and the inner fitting material 4 are coupled by caulking without using welding, the outer lid 3 and the inner fitting material 4 can be reliably coupled with sufficient strength.
[0032]
Further, since it is not necessary to make a hole in the outer lid 3 as in the case of screwing the outer lid 3 and the inner fitting material 4, rainwater, foreign matter, etc. from the joint between the outer lid 3 and the inner fitting material 4. There is no risk of intrusion into the pipe material.
[0033]
Further, in the step of forming the convex portion 3c in the central portion of the roof portion 3a of the outer lid 3, even when a concave portion or a depressed portion is generated in the roof portion 3a, the concave portion or the depressed portion is formed by the caulking operation step. Can be eliminated or made smaller.
[0034]
Further, since the outer lid 3 and the inner fitting material 4 are joined by caulking, the outer lid 3 and the inner fitting material 4 are plated or painted before the outer lid 3 and the inner fitting material 4 are joined. You can also do it.
[0035]
If the outer lid 3 and the inner fitting material 4 cannot move relatively completely, the processing of the gap 5 between the peripheral wall portion 3b of the outer lid 3 and the side portion 4b of the inner fitting material 4 is performed. If the accuracy is not increased, the lid 1 may not be attached to the pipe material 2. However, in this embodiment, the outer lid 3 and the inner fitting material 4 are caulked and joined at one point in the center of the roof portion 3a and the ceiling portion 4a. Since the portions are not connected to each other, the roof portion 3a and the outer peripheral side of the ceiling portion 4a can freely move to each other to some extent. As a result, the peripheral wall portion 3b of the outer lid 3 and the side portion 4b of the inner fitting material 4 Therefore, even if the processing accuracy is not increased, the variation in processing can be absorbed by the elasticity of the material, and the lid 1 can be appropriately attached to the pipe material 2. For the same reason, the cover 1 of the same standard can be applied to the pipe material 2 having a wide range of thickness.
[0036]
However, in the present invention, the roof portion 3a and the ceiling portion 4a are provided at a plurality of locations by providing a plurality of convex portions 3c and holes 4d in the roof portion 3a and the ceiling portion 4a, respectively, as required for the bonding strength and the like. It may be caulked.
[0037]
Further, a caulking portion bulging portion 4c that locally protrudes on the roof portion 3a side is provided in the ceiling portion 4a, and a hole 4d is formed in the caulking portion bulging portion 4c, and the caulking portion protruding portion 4c is formed on the roof portion 3a. And a non-caulking portion bulging portion 4e that locally bulges toward the roof portion 3a is provided at a position away from the hole 4d in the ceiling portion 4a, and these non-caulking portion bulging portions 4e. Since the gap 6 is reliably formed between the roof portion 3a and the ceiling portion 4a by contacting the roof portion 3a, water or water used for the cleaning process performed as a pretreatment for plating or painting is used. Since it is possible to prevent inconvenience that the chemical liquid remains on the facing portion between the roof portion 3a and the ceiling portion 4a and does not dry, the plating solution and the paint can easily enter the facing portion between the roof portion 3a and the ceiling portion 4a. After the outer lid 3 and the inner fitting material 4 are joined, May perform key or painting, it is possible to satisfactorily perform the plating or painting to the opposing portion of the roof portion 3a and the ceiling portion 4a.
[0038]
Furthermore, in this embodiment, the protrusion 3 e of the outer lid 3 abuts on the outer periphery of the pipe material 2, and a gap is surely provided between the inner peripheral surface of the peripheral wall portion 3 b of the outer lid 3 and the outer peripheral surface of the pipe material 2. Therefore, when the lid 1 is plated or painted together with the pipe material 2 in a state of being attached to the pipe material 2, the plating or painting can be performed well.
[0039]
In the present invention, the mode of plastic deformation of the projection 3c is not limited to the mode shown in the figure, and the direction of the force acting on the projection 3c is not necessarily limited to the axial direction. In short, the roof portion 3a and the ceiling portion 4a may be combined.
[0040]
FIG. 12 shows a first reference example of the present invention. The configuration of this reference example is the same as that described above except that the protrusion 3e is not provided on the outer lid 3, and that the caulking portion bulging portion 4c and the non-caulking portion bulging portion 4e are not provided on the inner fitting member 4. The configuration is the same as that of the first embodiment. Also in this reference example, the same operational effects as those of the first embodiment can be obtained except for the operational effects due to the provision of the protruding portions 3e, the caulking portion raised portions 4c, and the non-caulking portion raised portions 4e. .
[0041]
13 to 16 show a second embodiment of the present invention. In the present embodiment, as shown in FIG. 13, the shape and size corresponding to the convex portion 3 c of the outer lid 3 are formed at the center of the ceiling portion 4 a of the inner fitting member 4 before being coupled to the outer lid 3. The recess 4h is integrally formed by pressing. The other structure before the inner fitting member 4 is joined and the structure of the outer lid 3 are the same as those in the first embodiment.
[0042]
In the present embodiment, as shown in FIG. 13, the convex portion 3c of the outer lid 3 is fitted into the concave portion 4h of the inner fitting member 4, and the ceiling portion 4a is overlapped with the inner side of the roof portion 3a. Subsequently, the convex part 3c is compressed in the axial direction by a press machine, a caulking machine or the like, and the convex part 3c and the concave part 4h are plastically deformed so as to be flat as shown in FIGS. The outer lid 3 and the inner fitting member 4 are coupled to each other by caulking the ceiling portion 4a. Thereby, the lid 1 of the pipe material is completed. In this completed state, as in the case of the first embodiment, the side portion 4b of the inner fitting member 4 is disposed inward from the peripheral wall portion 3b of the outer lid 3, and the side portion 4b and the peripheral wall portion are arranged. A gap 5 for accommodating the peripheral wall of the end of the pipe material 2 is formed between 3b.
[0043]
Also in the present embodiment, as shown in FIG. 16, it can be attached to the pipe material 2 in the same manner as in the first embodiment, and the same effect as in the first embodiment can be obtained.
[0044]
In the present invention, the mode of plastic deformation of the convex portion 3c and the concave portion 4h is not limited to the mode shown in the figure, and the direction of the force acting on the convex portion 3c and the concave portion 4h is not necessarily limited to the axial direction. There is nothing. In short, the roof portion 3a and the ceiling portion 4a may be combined.
[0045]
FIG. 17 shows a second reference example of the present invention. The configuration of this reference example is the same as that described above except that the protrusion 3e is not provided on the outer lid 3, and that the caulking portion bulging portion 4c and the non-caulking portion bulging portion 4e are not provided on the inner fitting member 4. It is the same as that of the structure of the 2nd Example of FIGS. Also in this reference example, the same operational effects as those of the first embodiment can be obtained except for the operational effects due to the provision of the protruding portions 3e, the caulking portion raised portions 4c, and the non-caulking portion raised portions 4e. .
[0046]
In the present invention, the shapes of the outer lid 3 and the inner fitting member 4 are not limited to the shapes as in the above embodiments. Each of the above embodiments is an example in which the present invention is applied to a pipe cover for a round pipe material having a circular cross section. However, the present invention is a pipe for a square pipe material having a square shape such as a quadrilateral cross section. It can also be applied to a material lid.
[0047]
【The invention's effect】
As described above, the present invention
(A) Without performing spot welding, the outer lid and the inner fitting material can be combined, and the manufacturing cost can be reduced.
(B) The outer lid and the inner fitting material can be reliably bonded with sufficient strength.
(C) Before joining the outer lid and the inner fitting material, plating and painting can be performed on the outer lid and the inner fitting material.
(D) The caulking part bulging part that protrudes on the roof part side is provided in the ceiling part, and a hole or a recess is formed in the caulking part bulging part so that the caulking part bulging part comes into contact with the roof part. By providing a non-caulking ridge that protrudes at a position away from the hole or recess in the ceiling, the non-caulking bulge is brought into contact with the roof, so that the roof and the ceiling A gap can be surely formed between them, so that even when plating or painting is performed after the outer lid and the inner fitting material are joined, plating is performed on the facing portion between the roof portion and the ceiling portion. And will be able to paint well,
It is possible to obtain excellent effects such as.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which a conventional pipe material lid is mounted on a pipe material.
FIG. 2 is a longitudinal sectional view showing an outer lid before being joined to an inner fitting member in the first embodiment of the present invention.
FIG. 3 is a bottom view showing an outer lid before being joined to an inner fitting member in the first embodiment.
FIG. 4 is a longitudinal sectional view showing an inner fitting material before being joined to an outer lid in the first embodiment.
FIG. 5 is a plan view showing an inner fitting material before being joined to the outer lid in the first embodiment.
FIG. 6 is a bottom view showing the inner fitting material before being joined to the outer lid in the first embodiment.
FIG. 7 is a longitudinal sectional view showing a state in which the convex portion of the outer lid is inserted into the hole of the inner fitting member in the manufacturing process of the first embodiment.
FIG. 8 is a longitudinal sectional view showing a completed state of the pipe material lid in the first embodiment.
FIG. 9 is a bottom view showing a completed state of the pipe material lid in the first embodiment.
FIG. 10 is a front view showing a completed state of the pipe material lid in the first embodiment.
FIG. 11 is a longitudinal sectional view showing a state in which the pipe material lid of the first embodiment is attached to the pipe material.
FIG. 12 is a longitudinal sectional view showing a pipe material cover of the first reference example of the present invention attached to the pipe material.
FIG. 13 is a longitudinal sectional view showing a state in which the convex portion of the outer lid is fitted in the concave portion of the inner fitting member in the manufacturing process of the second embodiment of the present invention.
FIG. 14 is a longitudinal sectional view showing a completed state of the pipe material lid in the second embodiment.
FIG. 15 is a bottom view showing a completed state of the pipe material lid in the second embodiment.
FIG. 16 is a longitudinal sectional view showing a state in which the pipe material lid of the second embodiment is attached to the pipe material.
FIG. 17 is a longitudinal sectional view showing a pipe cover of a second reference example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lid of pipe material 2 Pipe material 3 Outer lid 3a Roof part 3b Peripheral wall part 3c Convex part 4 Inner fitting material 4a Ceiling part 4b Side part 4c Caulking part protuberance part 4d Hole 4e Non-caulking part Protrusion part 4h Concave part 6 Gap

Claims

An outer cover made of a metal integrally having a roof part, a peripheral wall part provided on a peripheral edge of the roof part, and a convex part projecting to the inner surface side formed by pressing the roof part ;
A ceiling portion, a caulking portion bulging portion that is locally raised on the roof portion side, a hole provided in the caulking portion bulging portion, and a peripheral portion of the ceiling portion. An inner fitting material integrally formed with a side portion that is bent and extended in a substantially vertical direction .
And the outer cover wherein the inner fitting member, before after inserting the Kitotsu portion before Kiana, by caulking and plastically deformed the roof and the ceiling without heating the protrusion The ceiling part is coupled to each other such that the ceiling part is disposed inside the roof part,
The side portion of the inner fitting member is disposed inward from the peripheral wall portion of the outer lid, and an end peripheral wall of the pipe material is accommodated between the side portion and the peripheral wall portion. A lid for a pipe material , wherein a gap is formed between the roof portion and the ceiling portion by the caulking portion raised portion being in contact with the roof portion .

A non-caulking portion bulging portion that locally bulges on the roof portion side is provided at a position away from the hole in the ceiling portion, and the non-caulking portion bulging portion is in contact with the roof portion. the lid of claim 1 Symbol placement of the pipe member so that the gap is formed between the ceiling and the roof is also I by the.

An outer cover made of a metal integrally having a roof part, a peripheral wall part provided on a peripheral edge of the roof part, and a convex part projecting to the inner surface side formed by pressing the roof part ;
A ceiling portion, a caulking portion bulging portion locally raised on the roof portion side, a concave portion provided in the caulking portion bulging portion, and a ceiling portion from the periphery of the ceiling portion An inner fitting material made of a metal integrally formed with a side portion that is bent and extended in a substantially vertical direction .
And the outer cover wherein the inner fitting member, either before said roof portion plastically deformed without heating the projections and the recesses with fitting the Kitotsu portion before Symbol recess and said ceiling section By tightening, the ceiling part is connected to each other so that it is arranged inside the roof part,
The side portion of the inner fitting member is disposed inward from the peripheral wall portion of the outer lid, and an end peripheral wall of the pipe material is accommodated between the side portion and the peripheral wall portion. A lid for a pipe material , wherein a gap is formed between the roof portion and the ceiling portion by the caulking portion raised portion being in contact with the roof portion .

A non-caulking portion bulging portion that locally bulges on the roof portion side is provided at a position away from the concave portion of the ceiling portion, and the non-caulking portion bulging portion is in contact with the roof portion. The pipe material lid according to claim 3 , wherein a gap is formed between the roof portion and the ceiling portion.

The lid of a pipe material according to any one of claims 1 to 4, wherein the roof portion and the ceiling portion are caulked at only one point in a central portion thereof.

An outer lid and an inner fitting material, and the outer lid is made of metal, and integrally includes a roof portion and a peripheral wall portion provided at a peripheral edge of the roof portion, while the inner fitting material is a ceiling. And a side part that is bent and extended in a substantially vertical direction with respect to the ceiling part from the periphery of the ceiling part , and the outer cover and the inner fitting member are It is mutually connected so that it may be arrange | positioned inside the said roof part, The said side part of the said inner fitting material is arrange | positioned inside the said surrounding wall part of the said outer cover, The said side part and the said surrounding wall In the manufacturing method of the pipe material lid in which the end peripheral wall of the pipe material is accommodated between the parts,
A step of integrally forming a convex portion protruding to the inner surface side on the roof portion of the outer lid by pressing ;
On the ceiling portion of the inner fitting material, providing a caulking portion raised portion that locally rises on the roof portion side;
Providing a hole in the caulking portion raised portion ;
After inserting the convex portion prior Kiana, by caulking and plastically deformed the roof and the ceiling without heating the convex portions, each other and the outer lid and the inner fitting member Combining, and
A gap is formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by causing the caulking portion raised portion to contact the roof portion. A method for manufacturing a lid for a pipe material.

Further comprising a step of providing a non-caulking portion raised portion locally raised on the roof portion side at a position away from the hole in the ceiling portion,
A gap is also formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by the non-caulking portion raised portion coming into contact with the roof portion. The method for manufacturing a lid for pipe material according to claim 6.

An outer lid and an inner fitting material, and the outer lid is made of metal, and integrally includes a roof portion and a peripheral wall portion provided at a peripheral edge of the roof portion. And integrally having a ceiling portion and a side portion extending from the periphery of the ceiling portion by being bent in a substantially vertical direction with respect to the ceiling portion , and the outer lid and the inner fitting material, The ceiling portions are coupled to each other so as to be disposed inside the roof portion, and the side portions of the inner fitting material are disposed inward from the peripheral wall portion of the outer lid, and the side portions In the method of manufacturing the lid of the pipe material in which the end peripheral wall of the pipe material is accommodated between the part and the peripheral wall part,
A step of integrally forming a convex portion protruding to the inner surface side on the roof portion of the outer lid by pressing ;
On the ceiling portion of the inner fitting material, providing a caulking portion raised portion that locally rises on the roof portion side;
Providing a recess in the caulking portion raised portion ;
By caulking the plastically deformed the roof and the ceiling without heating the projections and the recesses as well as fitting the convex portion prior Symbol recess, the said outer lid inner insert members And bonding each other ,
A gap is formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by causing the caulking portion raised portion to contact the roof portion. A method for manufacturing a lid for a pipe material.

Further comprising a step of providing a non-caulking portion raised portion locally raised on the roof portion side at a position away from the concave portion of the ceiling portion,
A gap is also formed between the roof portion and the ceiling portion after the outer lid and the inner fitting member are joined by the non-caulking portion raised portion coming into contact with the roof portion. The method for manufacturing a lid for a pipe material according to claim 8.

The manufacturing method of the lid | cover of the pipe material in any one of Claim 6 thru | or 9 which caulks the said roof part and the said ceiling part only by those one center part.