JP2004345699A - Lid-like member fitting structure of resin-made container - Google Patents

Lid-like member fitting structure of resin-made container Download PDF

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Publication number
JP2004345699A
JP2004345699A JP2003146032A JP2003146032A JP2004345699A JP 2004345699 A JP2004345699 A JP 2004345699A JP 2003146032 A JP2003146032 A JP 2003146032A JP 2003146032 A JP2003146032 A JP 2003146032A JP 2004345699 A JP2004345699 A JP 2004345699A
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Japan
Prior art keywords
ring
resin
resin container
groove
shaped member
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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JP2003146032A
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Japanese (ja)
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JP4454252B2 (en
Inventor
Kazuhiro Nakamura
和広 中村
Shoji Sato
庄司 佐藤
Yuji Yoshizawa
勇司 吉沢
Shinya Murabayashi
真也 村林
Naomasa Kaneko
直正 金子
Daiki Yanase
大樹 柳瀬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Yachiyo Industry Co Ltd
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Honda Motor Co Ltd
Yachiyo Industry Co Ltd
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Filing date
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Application filed by Honda Motor Co Ltd, Yachiyo Industry Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2003146032A priority Critical patent/JP4454252B2/en
Priority to EP03777291A priority patent/EP1591370B1/en
Priority to CA002508734A priority patent/CA2508734C/en
Priority to US10/537,640 priority patent/US20070062841A1/en
Priority to DE60313221T priority patent/DE60313221T2/en
Priority to PCT/JP2003/015599 priority patent/WO2004052743A1/en
Publication of JP2004345699A publication Critical patent/JP2004345699A/en
Application granted granted Critical
Publication of JP4454252B2 publication Critical patent/JP4454252B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid-like member fitting structure of a resin-made container capable of enhancing the fitting precision of a ring-like member. <P>SOLUTION: A resin-made container body (a tank body) 2 comprises a ring-like groove 6 formed in an outer circumferential part of an opening part 5, a plurality of bolts 4 which are integrally embedded in the ring-like groove 6 and circumferentially erected so as to be along the outer circumference of the opening part 5, and a metal ring-like member 3 formed of a flat plate. A cavity part 8 expecting the heat shrinkage of resin is formed in an outer circumferential part 6a of the ring-like groove 6. A bottom surface of the cavity part 8 is arranged lower than bottom surfaces of the ring-like member 3 and the bolts 4, and a water discharge passage 7 to discharge water stored in a peripheral part of the ring-like member 3 and the bolts 4 is formed therein. The ring-like member 3 is insert-molded with the resin to mold the resin-made container body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、自動車に搭載される燃料タンクに代表される樹脂製容器において、樹脂製容器本体に形成された開口部を閉鎖する蓋状部材(ポンプモジュール)の取付構造に関し、特に、蓋状部材を固定するために、樹脂製容器本体の開口部の外周に一体的に埋設されたリング状部材が、樹脂製容器本体を成形する樹脂によってインサート成形された樹脂製容器の蓋状部材取付構造に関する。
【0002】
【従来の技術】
従来、樹脂製容器である燃料タンクにおいて、樹脂製のタンク本体の開口部に蓋体を固定するための保持リングの構造が知られている。このような樹脂製のタンク本体の開口部近傍のフランジ部の上面にシール設置用溝を形成し、このシール設置用溝によってシールを保持させると共に、樹脂製のタンク本体とその蓋体とを、金属製の保持リングにより締結した構造がEP0816151A1に開示されている(例えば、特許文献1参照)。
【0003】
図6は、従来例に係る燃料タンクの開口部を示しており、図6(a)は開口部の平面図、図6(b)は(a)に示すG−G線の断面図である。
図6(a)(b)に示すように、燃料タンク110の開口部114を形成しているフランジ112に、金属製の保持リング120が装着されている。この保持リング120は、分割リング120a、120bからなり、蝶番122で係合されて、ボルト124、ナット125により締結されている。この分割リング120a、120bが、燃料タンク110の蓋体である保持板116を、フランジ112に締結し、燃料タンク110を密閉している。
【0004】
また、本出願人は、特願2002−355459号「燃料タンクの蓋体取付構造」を出願している。図7は、従来例に係る燃料タンクTの開口部の断面図である。図7に示すように、金属製のリング状部材58が、樹脂製のタンク本体52にインサート成形されている。この金属製のリング状部材58に一体的に植設されているボルト61も同様に金属製であり、金属製のリテーナ59を、ボルト61とナット63とによって、リング状部材58に締結している。このため、樹脂製のタンク本体52の開口部57と、蓋体51とを強固に密着して固定させることができる。これにより、燃料タンクTのタンク本体52に開けられた開口部57には、蓋体51を開口部57に密閉して取り付けることができる。
【0005】
【特許文献1】
EP0816151A1(FIG.1、FIG.3)
【0006】
【発明が解決しようとする課題】
しかしながら、前記した従来例では、タンク本体が樹脂製であるため、時間の経過と共にタンク本体に熱収縮が発生し、リング状部材とタンク本体(樹脂製容器)との間に取付精度を向上させにくいという課題があった。
【0007】
本発明は、前記課題を解決するためになされたものであり、樹脂製容器に設けられた開口部の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる樹脂製容器の蓋状部材取付構造を提供することを課題とする。
【0008】
【課題を解決するための手段】
前記課題を解決した本発明の請求項1に記載の発明は、樹脂製容器本体に設けられた開口部に蓋状部材を被せ、前記樹脂製容器本体を密閉する樹脂製容器の蓋状部材取付構造であって、前記樹脂製容器本体は、前記開口部の外周に沿って樹脂製容器本体の外面にリング状に設けられた溝と、該溝の中に一体的に埋設された金属製のリング状部材とを備えて構成され、樹脂成形直後の前記樹脂製容器本体において、前記溝の外周側の溝内壁面と、前記リング状部材の外周端面との間に樹脂の熱収縮を見込んだ空間部を設けたことを特徴とする。
【0009】
請求項1に記載の発明によれば、リング状に配設された溝の外周側の溝内壁面と、前記リング状部材の外周端面との間に樹脂の熱収縮を見込んだ空間部を設けたため、樹脂成形後に熱収縮が完了した段階で、リング状部材の外周端面と、リング状の溝の外周側の溝内壁面とが当接する。これにより、リング状部材と樹脂製容器本体との間に強固な結合が可能となり、開口部の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる。
【0010】
請求項2に記載の発明は、請求項1に記載の発明において、前記リング状部材は、前記樹脂製容器が熱収縮する方向に引っ掛からない形状をなし、前記開口部の外周に沿って円周状に立設した複数のボルトを有することを特徴とする。
【0011】
請求項2に記載の発明によれば、金属製のリング状部材は、樹脂製容器の熱収縮時に、熱収縮方向に引っ掛からないため、熱収縮に伴う樹脂のヒケによる反り・変形を抑制することが可能となり、溝内で滑らかに摺動することができる。また、開口部の外周に沿うように円周状に立設した複数のボルトを有するため、開口部の良好な密閉性を維持することができ、リング状部材の取付精度を向上させることができる。
【0012】
請求項3に記載の発明は、請求項1又は請求項2に記載の発明であって、樹脂成形後に熱収縮した状態の前記樹脂製容器本体において、前記溝の外周側の前記溝内壁面と、前記リング状部材又は前記ボルトの少なくとも一方の外周端面とが互いに当接することを特徴とする。
【0013】
請求項3に記載の発明によれば、リング状に配設された溝の外周側の溝内壁面とリング状部材又はボルトの少なくとも一方の外周端面とが互いに当接するため、リング状部材と溝の外周側の溝内壁面との間に隙間がなくなり、リング状部材と樹脂製容器本体とは、より強固な結合が可能となり、開口部の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる。
【0014】
請求項4に記載の発明は、請求項1又は請求項2に記載の発明であって、樹脂成形後の前記樹脂製容器本体において、前記空間部の底面を、前記リング状部材及び前記ボルトの底面よりも低く配置したことを特徴とする。
【0015】
請求項4に記載の発明によれば、溝に形成された空間部の底面を、リング状部材及びボルトの底面よりも低く配置したため、リング状部材及びボルトの外周端面を溝内壁面に密着して当接させることができ、開口部の良好な密閉性を維持することができると共に、リング状部材と樹脂製容器本体との取付精度を向上させることができる。
【0016】
請求項5に記載の発明は、請求項1又は請求項2に記載の発明であって、樹脂成形後に熱収縮した状態の前記樹脂製容器本体において、前記溝と、前記リング状部材及び前記ボルトとの界面、又はその周辺部に溜まった水を排水するための排水路を樹脂製容器本体の外面に設けたことを特徴とする。
【0017】
請求項5に記載の発明によれば、溝と、リング状部材及びボルトとの界面、又はその周辺部に溜まった水を排水するための排水路を樹脂製容器本体の外面に設けたため、リング状の溝と、リング状部材及びボルトの底面との界面、及びその周辺を排水路と連通する構造とすることにより、この界面及び周辺に溜まった水を外部に排水することが可能となり、錆びの発生が防止されて、開口部の良好な密閉性を維持することができると共に、リング状部材と樹脂製容器本体との取付精度を向上させることができる。
【0018】
請求項6に記載の発明は、請求項1〜請求項5の何れか1項に記載の発明において、前記リング状部材は、前記樹脂製容器本体を成形する樹脂によってインサート成形されて樹脂製容器本体を構成していることを特徴とする。
【0019】
請求項6に記載の発明によれば、リング状部材は、樹脂製容器本体を成形する樹脂によってインサート成形されて樹脂製容器本体を構成しているため、リング状部材と樹脂製容器本体との取付精度を向上させることができ、衝撃などの発生時にも有効な手段とすることができる。
【0020】
【発明の実施の形態】
本発明の一実施の形態に係る樹脂製容器の蓋状部材取付構造について、燃料タンクを例に図面を参照して説明する。尚、本実施の形態における燃料タンク、及びタンク本体は、請求項に示す樹脂製容器、及び樹脂製容器本体に相当する。
【0021】
図1は、本実施の形態の燃料タンク(樹脂製容器)の概略を示す斜視図である。図2(a)は、図1におけるA―A線の縦断面図であり、図2(b)は、図2(a)のC部におけるB矢視図である。図3は、図2(a)のC部の拡大断面図である。
【0022】
図1〜図3に示すように、燃料タンク1は、少なくとも一部にバリア材を備える樹脂製のタンク本体2と、このタンク本体2に開けられた開口部5とを備えて構成されている。この開口部5には、ポンプモジュールなどからなる蓋状部材9(図3参照)が取り付けられている。また、開口部5の外周部におけるタンク本体2の外面には、溝6がリング状に設けられており、この溝6には、リング状部材3がインサート成形によって樹脂成形されている。このリング状部材3は、樹脂製のタンク本体2が熱収縮する時に、熱収縮方向にタンク本体2と引っ掛からない形状、又は凹凸のない平板からなり、さらに、開口部5の外周に沿って円周状に立設した複数のボルト4を備えている。符号7は排水路を示し、この排水路7は、タンク本体2の外面に設けられている。これによって、排水路7が、リング状の溝6と、リング状部材3又はボルト4の少なくとも一方の底面との界面、及びその周辺と連通する構造になることによって、水分を外部に排水することが可能となり、錆びの発生を防止することができる。このように、排水路7は、タンク本体2の表面に1本設けられているが、適宜、本数を増やしても構わない。
【0023】
図4は、図3のE部を拡大した断面を示しており、図4(a)は、樹脂成形直後の開口部5の近傍を示す断面図、図4(b)は、樹脂成形後に熱収縮が完了した状態の開口部5の近傍を示す断面図である。図4(b)に示すように、燃料タンク1の開口部5には、破線で示した蓋状部材9が被せられ、この蓋状部材9がリテーナ10やナット11などによってタンク本体2に締結されている。これにより、タンク本体2が密閉される。このタンク本体2は、開口部5の外周部にリング状に設けられた溝6と、この溝6の中に一体的に埋設された金属製のリング状部材3とを備えて構成される。符号8は空間部を示しており、この空間部8は、開口部5の周囲にリング状に配設された溝6の外周側の溝内壁面6aと、リング状部材3の外周端面3a(図4(a)参照)又はボルト4の頭部4aの外周端面4c(図4(a)参照)の少なくとも一方との間にあって、樹脂の熱収縮を見込んだ熱収縮代Fとしての空間である。このため、空間部8は、樹脂成形直後のタンク本体2において存在するが、樹脂成形後に熱収縮が完了した段階には、図4(b)に示すように、空間としては存在しなくなる。このとき、空間部8は、空間としてではなく、リング状部材3が溝内壁面6aに当接した状態で存在している。また、ボルト4は、ねじ部4bを上側にして設けられている。
【0024】
図5は、図2(b)におけるD−D線の断面図であり、排水路7の断面を示している。排水路7は、樹脂成形直後のタンク本体2に形成された空間部8の底面から導き出されており、タンク本体2の外面に引き出されている。また、排水路7は、リング状に配設された溝6と、リング状部材3及びボルト4(図2及び図4参照)の底面との界面、及びその周辺に溜まった水を排水するために設けられる。そのため、樹脂成形直後のリング状の溝6に隣接して形成された空間部8の底面は、リング状部材3及びボルト4の底面よりも低く配置されている。このとき、溝6の横断面形状は、排水が可能であれば、特に限定するものではない。
【0025】
次に、以上の構成を備えた燃料タンク(樹脂製容器)の蓋状部材取付構造の動作を説明する。図4(a)(b)に示すように、樹脂成形直後のタンク本体2の開口部5を示す断面図(図4(a))と、樹脂成形後に熱収縮が完了した状態のタンク本体2の開口部5を示す断面図(図4(b))とを比較して説明する。図4(a)に示すように、樹脂成形直後の溝内壁面6aは、リング状部材3の外周端面3a又はボルト4の頭部4aの外周端面4cとの少なくとも一方との間に、タンク本体2が樹脂成形直後に熱収縮する際の熱収縮代Fを見込んだ空間部8を有している。また、図4(b)に示すように、樹脂成形後に熱収縮が完了した状態では、リング状に配設された溝6は、白抜き矢印の方向に熱収縮しているため、溝6の中に設けられている金属製のリング状部材3の外周端面3a又はボルト4の頭部4aの外周端面4cの少なくとも一方は、溝6の外周側の溝内壁面6aに当接して固定される。このように、外周端面3a又は外周端面4cの少なくとも一方は、溝内壁面6aとの間に隙間を有しない状態になる。すなわち、リング状部材3又はボルト4の少なくとも一方は、タンク本体2に強固に結合することが可能となり、開口部5の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる。
【0026】
図5に示すように、リング状の溝6に形成された空間部8の底面が、リング状部材3及びボルト4の底面よりも低く配置されている。また、空間部8の底面から導き出された排水路7が、タンク本体2の外面に設けられているため、リング状の溝6と、リング状部材3及びボルト4の底面との界面、及びその周辺に溜まった水が燃料タンクの外部に排水される。このように、当該構造を適用した自動車においては、優れた品質の樹脂製の燃料タンクを搭載することができる。
【0027】
以上、好ましい実施の形態について説明したが、本発明は前記実施の形態に限定されるものではなく、本発明の要旨を逸脱することのない範囲内において適宜の変更が可能なものである。例えば、本実施の形態では、排水路7は、タンク本体2の表面に1本設けられているが、適宜、増やしても構わない。また、リング状部材に備えられたボルトは、ねじ部を上側にして立設されていれば、ボルトの頭部の有無や、リング状部材に対する固設形態も特に限定されるものではない。また、本実施の形態では、自動車の燃料タンクに適用して説明したが、自動車の燃料タンクに限定するものではなく、一般的に容器形状に成形した樹脂部品全般に適用されるのは言うまでもない。
【0028】
【発明の効果】
以上説明したように、請求項1に記載の発明によれば、リング状に配設された溝の外周側の溝内壁面と、前記リング状部材の外周端面との間に樹脂の熱収縮を見込んだ空間部を設けたため、樹脂成形後に熱収縮が完了した段階で、リング状部材の外周端面と、リング状の溝の外周側の溝内壁面とが当接する。これにより、リング状部材と樹脂製容器本体(タンク本体)との間に、強固な結合が可能となり、開口部の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる。このように、当該構造を自動車に適用した場合には、優れた品質の燃料タンクを得ることができる。
【0029】
請求項2に記載の発明によれば、金属製のリング状部材は、樹脂製容器本体の熱収縮時に、熱収縮方向に引っ掛からないため、熱収縮に伴う樹脂のヒケによる反り・変形を抑制することが可能となり、溝内で滑らかに摺動することができる。また、開口部の外周に沿うように円周状に立設した複数のボルトを有するため、開口部の良好な密閉性を維持することができ、リング状部材の取付精度を向上させることができる。
【0030】
請求項3に記載の発明によれば、リング状に配設された溝の外周側の溝内壁面と前記リング状部材の外周端面とが互いに当接するため、リング状部材と溝の外周側の溝内壁面との間に隙間がなくなり、リング状部材と樹脂製容器本体(タンク本体)とは、より強固な結合が可能となり、開口部の良好な密閉性を維持することができると共に、リング状部材の取付精度を向上させることができる。
【0031】
請求項4に記載の発明によれば、溝に形成された空間部の底面を、リング状部材及びボルトの底面よりも低く配置したため、リング状部材及びボルトの外周端面を溝内壁面に密着して当接させることができ、開口部の良好な密閉性を維持することができると共に、リング状部材と樹脂製容器本体(タンク本体)との間の取付精度を向上させることができる。
【0032】
請求項5に記載の発明によれば、溝と、リング状部材及びボルトとの界面、又はその周辺部に溜まった水を排水するための排水路を樹脂製容器本体(タンク本体)の外面に設けたため、リング状の溝と、リング状部材及びボルトの底面との界面、及びその周辺を排水路と連通する構造とすることにより、この界面及び周辺に溜まった水を外部に排水することが可能となり、錆びの発生が防止されて、開口部の良好な密閉性を維持することができると共に、リング状部材と樹脂製容器本体との取付精度を向上させることができる。
【0033】
請求項6に記載の発明によれば、リング状部材は、樹脂製容器本体(タンク本体)を成形する樹脂によってインサート成形されて樹脂製容器本体を構成しているため、リング状部材と樹脂製容器本体との取付精度を向上させることができ、衝撃などの発生時にも有効な手段となる。
【図面の簡単な説明】
【図1】本発明の一実施の形態に係る燃料タンクの概略を示す斜視図である。
【図2】(a)は、図1におけるA―A線の縦断面図、(b)は、(a)におけるC部のB矢視図である。
【図3】図2(a)のC部の縦断面図である。
【図4】図3のE部を拡大した断面を示しており、(a)は、樹脂成形直後の開口部の近傍を示す断面図、(b)は、樹脂成形後に熱収縮が完了した状態の開口部の近傍を示す断面図である。
【図5】図2(b)におけるD−D線の断面図である。
【図6】従来の燃料タンクの蓋体取付構造の概略を示し、(a)は平面図、(b)は(a)におけるG−G線の断面図である。
【図7】従来の燃料タンクの蓋体取付構造の概略を示す断面図である。
【符号の説明】
1 燃料タンク(樹脂製容器)
2 タンク本体(樹脂製容器本体)
3 リング状部材
3a 外周端面
4 ボルト
4a 頭部
4b ねじ部
4c 外周端面
5 開口部
6 リング状の溝
6a 溝内壁面
7 排水路
8 空間部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a mounting structure of a lid member (pump module) for closing an opening formed in a resin container main body in a resin container typified by a fuel tank mounted on an automobile, and particularly to a lid member. A ring-shaped member integrally embedded in the outer periphery of the opening of the resin container main body for fixing the resin container main body is related to a lid-shaped member mounting structure of a resin container formed by insert molding with a resin for molding the resin container main body. .
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a fuel tank that is a resin container, a structure of a holding ring for fixing a lid to an opening of a resin tank body is known. A seal installation groove is formed on the upper surface of the flange portion near the opening of such a resin tank body, and the seal is held by the seal installation groove, and the resin tank body and its lid are A structure fastened by a metal holding ring is disclosed in EP0816151A1 (for example, see Patent Document 1).
[0003]
6A and 6B show an opening of a fuel tank according to a conventional example. FIG. 6A is a plan view of the opening, and FIG. 6B is a sectional view taken along line GG shown in FIG. .
As shown in FIGS. 6A and 6B, a metal holding ring 120 is mounted on a flange 112 forming an opening 114 of the fuel tank 110. The retaining ring 120 is composed of split rings 120a and 120b, is engaged by a hinge 122, and is fastened by a bolt 124 and a nut 125. The split rings 120 a and 120 b fasten the holding plate 116, which is the lid of the fuel tank 110, to the flange 112, and seal the fuel tank 110.
[0004]
In addition, the present applicant has filed an application for Japanese Patent Application No. 2002-355559, entitled "Fuel tank lid mounting structure". FIG. 7 is a sectional view of an opening of a fuel tank T according to a conventional example. As shown in FIG. 7, a metal ring-shaped member 58 is insert-molded in a resin tank body 52. The bolt 61 integrally implanted in the metal ring member 58 is also made of metal, and the metal retainer 59 is fastened to the ring member 58 by the bolt 61 and the nut 63. I have. Therefore, the opening 57 of the resin tank body 52 and the lid 51 can be firmly adhered and fixed. Thus, the lid 51 can be hermetically attached to the opening 57 of the fuel tank T, which is opened in the tank body 52.
[0005]
[Patent Document 1]
EP0816151A1 (FIG. 1, FIG. 3)
[0006]
[Problems to be solved by the invention]
However, in the conventional example described above, since the tank body is made of resin, heat shrinkage occurs in the tank body with the passage of time, and the mounting accuracy between the ring-shaped member and the tank body (resin container) is improved. There was a problem that it was difficult.
[0007]
The present invention has been made in order to solve the above-mentioned problems, and can maintain good sealing performance of an opening provided in a resin container and improve the mounting accuracy of a ring-shaped member. It is an object to provide a lid-like member mounting structure for a resin container that can be provided.
[0008]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention that solves the above-mentioned problem is to cover a resin container body with a lid member over an opening provided in the resin container body, and to attach the lid member of the resin container to seal the resin container body. The resin container body has a groove provided in a ring shape on an outer surface of the resin container body along the outer periphery of the opening, and a metal container integrally embedded in the groove. In the resin container body immediately after resin molding, heat shrinkage of the resin is expected between the groove inner wall surface on the outer peripheral side of the groove and the outer peripheral end surface of the ring-shaped member. It is characterized in that a space is provided.
[0009]
According to the first aspect of the present invention, a space is provided between the inner wall surface on the outer peripheral side of the groove provided in the ring shape and the outer peripheral end surface of the ring-shaped member in consideration of the thermal contraction of the resin. Therefore, at the stage where the heat shrinkage is completed after the resin molding, the outer peripheral end surface of the ring-shaped member comes into contact with the inner wall surface of the outer peripheral side of the ring-shaped groove. This enables a strong connection between the ring-shaped member and the resin container main body, thereby maintaining good sealing of the opening and improving the mounting accuracy of the ring-shaped member.
[0010]
According to a second aspect of the present invention, in the first aspect of the present invention, the ring-shaped member has a shape that does not catch in a direction in which the resin container thermally contracts, and is formed along a circumference of the opening. It is characterized by having a plurality of bolts erected in a shape.
[0011]
According to the second aspect of the present invention, the metal ring-shaped member does not catch in the heat shrinkage direction during the heat shrinkage of the resin container, thereby suppressing warping and deformation due to sink of the resin due to the heat shrinkage. , And can slide smoothly in the groove. In addition, since there are a plurality of bolts erected circumferentially along the outer periphery of the opening, good sealing of the opening can be maintained, and mounting accuracy of the ring-shaped member can be improved. .
[0012]
The invention according to claim 3 is the invention according to claim 1 or claim 2, wherein in the resin container body in a state of being thermally shrunk after resin molding, the groove inner wall surface on the outer peripheral side of the groove is formed. The outer peripheral end surface of at least one of the ring-shaped member and the bolt is in contact with each other.
[0013]
According to the third aspect of the present invention, since the groove inner wall surface on the outer peripheral side of the groove provided in the ring shape and the outer peripheral end surface of at least one of the ring-shaped member and the bolt contact each other, the ring-shaped member and the groove are formed. There is no gap between the inner wall surface of the groove on the outer peripheral side of the ring and the ring-shaped member and the resin container main body can be more firmly connected to each other. It is possible to improve the mounting accuracy of the shaped member.
[0014]
The invention according to claim 4 is the invention according to claim 1 or claim 2, wherein in the resin container main body after resin molding, the bottom surface of the space portion is formed of the ring-shaped member and the bolt. It is characterized by being arranged lower than the bottom.
[0015]
According to the invention as set forth in claim 4, since the bottom surface of the space formed in the groove is arranged lower than the bottom surfaces of the ring-shaped member and the bolt, the outer peripheral end surfaces of the ring-shaped member and the bolt are closely attached to the inner wall surface of the groove. And it is possible to maintain good sealing of the opening, and to improve the mounting accuracy between the ring-shaped member and the resin container main body.
[0016]
The invention according to claim 5 is the invention according to claim 1 or claim 2, wherein the groove, the ring-shaped member, and the bolt are provided in the resin container main body in a heat-shrinked state after resin molding. And a drainage channel for draining water collected at the interface with or around the resin container is provided on the outer surface of the resin container body.
[0017]
According to the invention as set forth in claim 5, since a drainage channel for draining water collected at the interface between the groove, the ring-shaped member and the bolt, or the peripheral portion thereof is provided on the outer surface of the resin container main body, The interface between the groove and the bottom of the ring-shaped member and the bolt, and its surroundings are connected to the drainage channel, so that water accumulated at this interface and its surroundings can be drained to the outside, resulting in rust. Is prevented from occurring, and good sealing performance of the opening can be maintained, and mounting accuracy between the ring-shaped member and the resin container main body can be improved.
[0018]
According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the ring-shaped member is insert-molded with a resin for molding the resin-made container body. It is characterized by constituting a main body.
[0019]
According to the invention as set forth in claim 6, the ring-shaped member is insert-molded with a resin for molding the resin-made container main body to constitute the resin-made container main body. The mounting accuracy can be improved, and it can be an effective means even when an impact or the like occurs.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
A lid-like member mounting structure for a resin container according to an embodiment of the present invention will be described with reference to the drawings, taking a fuel tank as an example. The fuel tank and the tank body in the present embodiment correspond to the resin container and the resin container body described in the claims.
[0021]
FIG. 1 is a perspective view schematically showing a fuel tank (resin container) of the present embodiment. FIG. 2A is a longitudinal sectional view taken along the line AA in FIG. 1, and FIG. 2B is a view taken in the direction of arrow B in a portion C in FIG. 2A. FIG. 3 is an enlarged sectional view of a portion C in FIG.
[0022]
As shown in FIGS. 1 to 3, the fuel tank 1 includes a resin tank main body 2 having a barrier material at least partially, and an opening 5 opened in the tank main body 2. . A lid member 9 (see FIG. 3) made of a pump module or the like is attached to the opening 5. In addition, a groove 6 is provided in a ring shape on the outer surface of the tank body 2 at an outer peripheral portion of the opening 5, and the ring-shaped member 3 is resin-molded in the groove 6 by insert molding. The ring-shaped member 3 is formed of a flat shape having no shape or irregularity that does not catch on the tank body 2 in the heat shrinkage direction when the resin-made tank body 2 thermally shrinks, and further has a circular shape along the outer periphery of the opening 5. A plurality of bolts 4 erected in a circumferential shape are provided. Reference numeral 7 denotes a drainage channel, and the drainage channel 7 is provided on the outer surface of the tank body 2. As a result, the drainage channel 7 is configured to communicate with the interface between the ring-shaped groove 6 and the bottom surface of at least one of the ring-shaped member 3 and the bolt 4 and the periphery thereof, thereby draining moisture to the outside. And rust can be prevented from occurring. Thus, although one drainage channel 7 is provided on the surface of the tank body 2, the number of drainage channels 7 may be increased as appropriate.
[0023]
FIG. 4 shows an enlarged cross section of the portion E in FIG. 3. FIG. 4 (a) is a cross sectional view showing the vicinity of the opening 5 immediately after resin molding, and FIG. It is sectional drawing which shows the vicinity of the opening part 5 in the state which contraction was completed. As shown in FIG. 4 (b), the opening 5 of the fuel tank 1 is covered with a lid member 9 shown by a broken line, and the lid member 9 is fastened to the tank body 2 by a retainer 10, a nut 11, or the like. Have been. Thereby, the tank main body 2 is sealed. The tank main body 2 is provided with a groove 6 provided in a ring shape on the outer periphery of the opening 5 and a metal ring-shaped member 3 integrally embedded in the groove 6. Reference numeral 8 denotes a space portion. The space portion 8 has a groove inner wall surface 6a on the outer peripheral side of the groove 6 provided in a ring shape around the opening 5 and an outer peripheral end surface 3a ( 4 (a) or at least one of the outer peripheral end surface 4c (see FIG. 4 (a)) of the head 4a of the bolt 4 and a space as a heat shrinkage allowance F in consideration of heat shrinkage of the resin. . Therefore, the space 8 exists in the tank main body 2 immediately after the resin molding, but does not exist as a space at the stage where the heat shrinkage is completed after the resin molding, as shown in FIG. 4B. At this time, the space 8 exists not as a space but in a state where the ring-shaped member 3 is in contact with the inner wall surface 6a of the groove. The bolt 4 is provided with the screw portion 4b facing upward.
[0024]
FIG. 5 is a cross-sectional view taken along a line DD in FIG. The drainage channel 7 is led out from the bottom surface of the space 8 formed in the tank main body 2 immediately after the resin molding, and is drawn out to the outer surface of the tank main body 2. The drainage channel 7 is for draining water collected at the interface between the ring-shaped groove 6 and the bottom surface of the ring-shaped member 3 and the bolt 4 (see FIGS. 2 and 4), and around the interface. Is provided. Therefore, the bottom surface of the space 8 formed adjacent to the ring-shaped groove 6 immediately after resin molding is disposed lower than the bottom surfaces of the ring-shaped member 3 and the bolt 4. At this time, the cross-sectional shape of the groove 6 is not particularly limited as long as drainage is possible.
[0025]
Next, the operation of the lid-shaped member mounting structure of the fuel tank (resin container) having the above configuration will be described. As shown in FIGS. 4A and 4B, a cross-sectional view showing the opening 5 of the tank body 2 immediately after resin molding (FIG. 4A) and the tank body 2 in a state where heat shrinkage is completed after resin molding. The cross-sectional view (FIG. 4B) showing the opening 5 will be described. As shown in FIG. 4A, the inner wall surface 6a of the groove immediately after the resin molding is located between at least one of the outer peripheral end surface 3a of the ring-shaped member 3 and the outer peripheral end surface 4c of the head 4a of the bolt 4. 2 has a space portion 8 that allows for heat shrinkage F when heat shrinks immediately after resin molding. In addition, as shown in FIG. 4B, in a state where the heat shrinkage is completed after the resin molding, the groove 6 arranged in a ring shape is thermally shrunk in the direction of the outline arrow. At least one of the outer peripheral end face 3a of the metal ring-shaped member 3 provided therein or the outer peripheral end face 4c of the head 4a of the bolt 4 abuts and is fixed to the groove inner wall surface 6a on the outer peripheral side of the groove 6. . As described above, at least one of the outer peripheral end surface 3a and the outer peripheral end surface 4c has no gap with the groove inner wall surface 6a. That is, at least one of the ring-shaped member 3 and the bolt 4 can be firmly connected to the tank main body 2, so that good sealing of the opening 5 can be maintained and mounting accuracy of the ring-shaped member can be reduced. Can be improved.
[0026]
As shown in FIG. 5, the bottom surface of the space 8 formed in the ring-shaped groove 6 is disposed lower than the bottom surfaces of the ring-shaped member 3 and the bolt 4. Further, since the drainage channel 7 led out from the bottom surface of the space 8 is provided on the outer surface of the tank body 2, the interface between the ring-shaped groove 6 and the bottom surfaces of the ring-shaped member 3 and the bolt 4, and the like. Water accumulated in the surrounding area is drained out of the fuel tank. As described above, in a vehicle to which the structure is applied, a fuel tank made of resin having excellent quality can be mounted.
[0027]
Although the preferred embodiment has been described above, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention. For example, in the present embodiment, one drainage channel 7 is provided on the surface of the tank body 2, but may be increased as appropriate. Further, as long as the bolt provided on the ring-shaped member is erected with the screw portion facing upward, the presence or absence of the head of the bolt and the form of fixing the bolt to the ring-shaped member are not particularly limited. Further, in the present embodiment, the description has been given by applying the present invention to a fuel tank of an automobile. However, it is needless to say that the present invention is not limited to the fuel tank of an automobile and is generally applied to all resin parts molded into a container shape. .
[0028]
【The invention's effect】
As described above, according to the first aspect of the present invention, heat shrinkage of the resin is caused between the groove inner wall surface on the outer peripheral side of the groove provided in the ring shape and the outer peripheral end surface of the ring-shaped member. Since the anticipated space is provided, the outer peripheral end surface of the ring-shaped member and the inner wall surface of the outer peripheral side of the ring-shaped groove come into contact with each other at the stage when the heat shrinkage is completed after the resin molding. As a result, a strong connection between the ring-shaped member and the resin container body (tank body) becomes possible, and good sealing of the opening can be maintained, and mounting accuracy of the ring-shaped member is improved. Can be done. Thus, when the structure is applied to an automobile, a fuel tank of excellent quality can be obtained.
[0029]
According to the second aspect of the present invention, the metal ring-shaped member is not caught in the heat shrinkage direction when the resin container body is thermally shrunk, so that warping and deformation due to sink of the resin due to the heat shrinkage are suppressed. It is possible to slide smoothly in the groove. In addition, since there are a plurality of bolts erected circumferentially along the outer periphery of the opening, good sealing of the opening can be maintained, and mounting accuracy of the ring-shaped member can be improved. .
[0030]
According to the third aspect of the present invention, since the groove inner wall surface on the outer peripheral side of the groove provided in the ring shape and the outer peripheral end surface of the ring-shaped member abut against each other, the outer peripheral side of the ring-shaped member and the groove are formed. There is no gap between the groove inner wall surface and the ring-shaped member and the resin container main body (tank main body) can be more firmly connected to each other. It is possible to improve the mounting accuracy of the shaped member.
[0031]
According to the fourth aspect of the present invention, since the bottom surface of the space formed in the groove is disposed lower than the bottom surface of the ring-shaped member and the bolt, the outer peripheral end surfaces of the ring-shaped member and the bolt are closely attached to the inner wall surface of the groove. And the opening can be maintained in a good sealing property, and the mounting accuracy between the ring-shaped member and the resin container main body (tank main body) can be improved.
[0032]
According to the invention as set forth in claim 5, a drainage channel for draining water collected at an interface between the groove, the ring-shaped member and the bolt, or a peripheral portion thereof is provided on the outer surface of the resin container body (tank body). Because of the provision, the interface between the ring-shaped groove and the bottom surface of the ring-shaped member and the bolt, and the periphery thereof are configured to communicate with the drainage channel, so that water accumulated at this interface and the periphery can be drained to the outside. This makes it possible to prevent the occurrence of rust, maintain good sealing of the opening, and improve the mounting accuracy between the ring-shaped member and the resin container body.
[0033]
According to the invention as set forth in claim 6, the ring-shaped member is insert-molded with a resin for forming the resin-made container body (tank body) to form the resin-made container body. The accuracy of attachment to the container body can be improved, and this is an effective means even when an impact or the like occurs.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a fuel tank according to an embodiment of the present invention.
2A is a longitudinal sectional view taken along the line AA in FIG. 1, and FIG. 2B is a view of the C section in FIG.
FIG. 3 is a longitudinal sectional view of a portion C in FIG. 2 (a).
4A and 4B are enlarged cross-sectional views of a portion E in FIG. 3, wherein FIG. 4A is a cross-sectional view showing the vicinity of an opening immediately after resin molding, and FIG. 4B is a state in which heat shrinkage is completed after resin molding. FIG. 4 is a cross-sectional view showing the vicinity of the opening of FIG.
FIG. 5 is a sectional view taken along line DD in FIG. 2 (b).
6 (a) is a plan view, and FIG. 6 (b) is a cross-sectional view taken along the line GG in FIG. 6 (a).
FIG. 7 is a sectional view schematically showing a conventional lid mounting structure for a fuel tank.
[Explanation of symbols]
1 fuel tank (resin container)
2 Tank body (resin body)
Reference Signs List 3 ring-shaped member 3a outer peripheral end surface 4 bolt 4a head 4b screw portion 4c outer peripheral end surface 5 opening 6 ring-shaped groove 6a groove inner wall surface 7 drainage channel 8 space

Claims (6)

樹脂製容器本体に設けられた開口部に蓋状部材を被せ、前記樹脂製容器本体を密閉する樹脂製容器の蓋状部材取付構造であって、
前記樹脂製容器本体は、前記開口部の外周に沿って樹脂製容器本体の外面にリング状に設けられた溝と、該溝の中に一体的に埋設された金属製のリング状部材とを備えて構成され、
樹脂成形直後の前記樹脂製容器本体において、前記溝の外周側の溝内壁面と、前記リング状部材の外周端面との間に樹脂の熱収縮を見込んだ空間部を設けたことを特徴とする樹脂製容器の蓋状部材取付構造。
A lid-like member mounting structure for a resin container that covers the opening provided in the resin container body and seals the resin container body,
The resin container body includes a groove provided in a ring shape on the outer surface of the resin container body along the outer periphery of the opening, and a metal ring member integrally embedded in the groove. Configured with
In the resin container body immediately after resin molding, a space is provided between the inner wall surface of the groove on the outer peripheral side of the groove and the outer peripheral end surface of the ring-shaped member in consideration of thermal contraction of the resin. A lid-like member mounting structure for a resin container.
前記リング状部材は、前記樹脂製容器が熱収縮する方向に引っ掛からない形状をなし、前記開口部の外周に沿って円周状に立設した複数のボルトを有することを特徴とする請求項1に記載の樹脂製容器の蓋状部材取付構造。The said ring-shaped member has the shape which does not catch in the direction in which the said resin container heat-shrinks, and has several bolts erected in the circumference along the outer periphery of the said opening part, The characterized by the above-mentioned. 4. The lid-like member mounting structure for a resin container according to 4. 樹脂成形後に熱収縮した状態の前記樹脂製容器本体において、前記溝の外周側の前記溝内壁面と、前記リング状部材又は前記ボルトの少なくとも一方の外周端面とが互いに当接することを特徴とする請求項1又は請求項2に記載の樹脂製容器の蓋状部材取付構造。In the resin container body in a state of being thermally contracted after resin molding, the inner wall surface of the groove on the outer peripheral side of the groove and the outer peripheral end surface of at least one of the ring-shaped member or the bolt are in contact with each other. The lid-like member mounting structure for a resin container according to claim 1 or 2. 樹脂成形後に前記樹脂製容器本体において、前記空間部の底面を、前記リング状部材及び前記ボルトの底面よりも低く配置したことを特徴とする請求項1又は請求項2に記載の樹脂製容器の蓋状部材取付構造。3. The resin container according to claim 1, wherein a bottom surface of the space portion is disposed lower than a bottom surface of the ring-shaped member and the bolt in the resin container body after resin molding. 4. Lid-like member mounting structure. 樹脂成形後に熱収縮した状態の前記樹脂製容器本体において、前記溝と、前記リング状部材及び前記ボルトとの界面、又はその周辺部に溜まった水を排水するための排水路を樹脂製容器本体の外面に設けたことを特徴とする請求項1又は請求項2に記載の樹脂製容器の蓋状部材取付構造。In the resin container body that has been thermally shrunk after resin molding, the resin container body has a drainage channel for draining water accumulated at the interface between the groove, the ring-shaped member and the bolt, or at a peripheral portion thereof. The lid-like member mounting structure for a resin container according to claim 1 or 2, wherein the lid-like member mounting structure is provided on an outer surface of the resin container. 前記リング状部材は、前記樹脂製容器本体を成形する樹脂によってインサート成形されて樹脂製容器本体を構成していることを特徴とする請求項1〜請求項5の何れか1項に記載の樹脂製容器の蓋状部材取付構造。The resin according to any one of claims 1 to 5, wherein the ring-shaped member constitutes a resin container body by insert molding with a resin for molding the resin container body. Lid-shaped mounting structure for container
JP2003146032A 2002-12-06 2003-05-23 Plastic container lid-like member mounting structure Expired - Fee Related JP4454252B2 (en)

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Application Number Priority Date Filing Date Title
JP2003146032A JP4454252B2 (en) 2003-05-23 2003-05-23 Plastic container lid-like member mounting structure
EP03777291A EP1591370B1 (en) 2002-12-06 2003-12-05 Cover body mounting structure of resin container
CA002508734A CA2508734C (en) 2002-12-06 2003-12-05 Cover-mounting structure of plastic container
US10/537,640 US20070062841A1 (en) 2002-12-06 2003-12-05 Cover body mounting structure of resin container
DE60313221T DE60313221T2 (en) 2002-12-06 2003-12-05 MOUNTING STRUCTURE FOR COVERING A RESIN RESERVOIR
PCT/JP2003/015599 WO2004052743A1 (en) 2002-12-06 2003-12-05 Cover body mounting structure of resin container

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007308035A (en) * 2006-05-18 2007-11-29 Fts:Kk Opening part structure for fuel tank, and method for manufacturing the same
WO2016098339A1 (en) * 2014-12-18 2016-06-23 株式会社デンソー Tank cover unit and fuel supply device
EP3470253A1 (en) * 2017-10-12 2019-04-17 Toyota Jidosha Kabushiki Kaisha Fuel tank

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007308035A (en) * 2006-05-18 2007-11-29 Fts:Kk Opening part structure for fuel tank, and method for manufacturing the same
JP4646143B2 (en) * 2006-05-18 2011-03-09 株式会社Fts Fuel tank opening structure and manufacturing method thereof
WO2016098339A1 (en) * 2014-12-18 2016-06-23 株式会社デンソー Tank cover unit and fuel supply device
JP2016118106A (en) * 2014-12-18 2016-06-30 株式会社デンソー Tank lid unit and fuel supply device
KR20170088889A (en) * 2014-12-18 2017-08-02 가부시키가이샤 덴소 Tank cover unit and fuel supply device
KR101893602B1 (en) 2014-12-18 2018-08-31 가부시키가이샤 덴소 Tank lid unit and fuel supply device
EP3470253A1 (en) * 2017-10-12 2019-04-17 Toyota Jidosha Kabushiki Kaisha Fuel tank

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