JP3926608B2

JP3926608B2 - Ventilator for vehicles

Info

Publication number: JP3926608B2
Application number: JP2001363085A
Authority: JP
Inventors: 信二杉江
Original assignee: Inoac Corp
Current assignee: Inoac Corp
Priority date: 2001-11-28
Filing date: 2001-11-28
Publication date: 2007-06-06
Anticipated expiration: 2021-11-28
Also published as: JP2003165329A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車等のドア開閉時の車室内圧力の開放等として設けられる車両用換気装置に関する。
【０００２】
【従来の技術】
自動車後部のバンパー裏には、ドア開閉時の車室内圧力の開放や走行中の車室内の空気置換を図る換気装置がある。車室前部等から入り込んだ空気は、この換気装置の排気口６０を通って集中的に車外へ排出される（図９参照）。該排気口６０を形成する開口枠６にはシート弁３が取付けられており、走行中、該シート弁３は車室内，外の圧力差に応じて開き具合を変え、風量調整を行なっている。また、停止時等で特にアイドリング時にあっては、シート弁３は排気口６０に蓋をし、外部から車室内へ排気ガスや異物等が侵入しないようにしている。
こうした車両用換気装置は通常ユーザーが目にすることがなく、性能さえ満足すれば事足りる部品であるため低コスト化が強く求められる。そのため車両ボディへの組み付けは一般に図９に示すような爪嵌合６３によって行われている。一方、換気装置は前述のごとく車室内圧力を効率良く車外に開放するすなわち高通気効率が要求される弁であり、なによりもボディ開口５０を如何に有効利用するかで性能が決まる。
【０００３】
【発明が解決しようとする課題】
しかるに、爪嵌合６３の場合は爪部形成する際の金型スライド保護のためにボディ開口を狭めていた。すなわち、図９,図１０に示すようにボディ開口５０はもともと高さｈであったものから、前記爪部６３に要する部分ａと換気装置の枠体厚みｂと弁シール面部分ｃが差し引かれて有効開口高さになる。これらが上下に存在することから有効開口高さはまたその分狭くなっている。爪部６３に要する部分ａが３〜５ｍｍで、金型スライド保護に要する部分ａ_１は最低３ｍｍ必要とされる。
【０００４】
本発明は上記問題点を解決するもので、ボディ開口を最大限有効活用できる車両用換気装置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】
上記目的を達成すべく、請求項１に記載の発明の要旨は、車室内空気を車外へ排出する排気口(110)を形成する筒部(11)と該筒部の外周縁を外方に延設して車体パネル(5)の外側にシール部材(4)を介して配されるフランジ部(12)とを備えて両者が一体成形されると共に、前記筒部 (11) のフランジ部 (12) との接続部分に貫通孔 (13) が形成され、その貫通孔に係る筒部側貫通孔 (13b) がフランジ部 (12) に当たる部分は、フランジ部 (12) の車外側に通り抜けてフランジ部側貫通孔 (13a) になっている枠本体(1)と、前記排気口(110)に蓋をし、車室内圧力の高まりに応じて排気口(110)を開放するようにして前記枠本体(1)に取着されるシート状弁体(3)と、合成樹脂成形品で、前記フランジ部(12)に対応する大きさの開口フレーム部(21)を形成すると共にその内周縁の複数箇所に、外向き突起(222)を先端に形成する突出部(22)を立設した開口枠(2)と、を具備し、車体パネル(5)の外側からシール部材(4)を介在させてボディ開口(50)内に筒部(11)を挿入するようにして枠本体(1)を車体パネル(5)の車外側に配し、さらにその車外側から前記開口枠(2)に係る突出部 (22) が、合成樹脂の保有する弾発性を利用して内側に撓んでフランジ部 (12) をくぐって前記貫通孔(13)に嵌入し、前記外向き突起(222)を車体パネル(5)の車室側内壁(52)に係止させることにより前記枠本体(1)及び前記開口枠(2)を車体パネル(5)に固定できるようにしたことを特徴とする車両用換気装置にある。
請求項２の発明たる車両用換気装置は、請求項１で、フランジ部(12)に形成された貫通孔(13)の車外側からの側面視形状が、前記排気口(110)から該フランジ部に向かって逆ハ字形又は逆凸字形で、この逆ハ字形又は逆凸字形に広がる貫通孔 (13) はフランジ部側貫通孔 (13a) だけとし、一方、前記突出部 (22) は、主要部の帯状部 (221) が開口フレーム部 (21) から延び且つ該突出部の基端部分の断面形状が前記側面視形状に対応して、前記貫通孔(13)に嵌合する形状であることを特徴とする。
【０００６】
請求項１の発明のごとく、筒部 (11) のフランジ部 (12) との接続部分に貫通孔 (13) が形成され、その貫通孔に係る筒部側貫通孔 (13b) がフランジ部 (12) に当たる部分は、フランジ部 (12) の車外側に通り抜けてフランジ部側貫通孔 (13a) になっている枠本体(1)と、合成樹脂成形品で、前記フランジ部(12)に対応する大きさの開口フレーム部(21)を形成すると共にその内周縁の複数箇所に外向き突起(222)を先端に形成する突出部(22)を立設した開口枠(2)と、を具備し、開口枠(2)に係る突出部 (22) が、合成樹脂の保有する弾発性を利用して内側に撓んでフランジ部 (12) をくぐって前記貫通孔(13)に嵌入し、外向き突起を車体パネルの車室側内壁に係止させることにより枠本体及び開口枠を車体パネルに固定できるようにすると、外向き突起の出っ張り部分は車室側内壁に出て係止の役目を担い、突出部の主部は枠本体の厚みに合わせて吸収されるようにできるので、車両用換気装置を車体パネルに係止する部分がボディ開口を狭めることがなく、ボディ開口を最大限利用できる。
請求項２の発明のごとく、フランジ部(12)に形成された貫通孔(13)の車外側からの側面視形状が、前記排気口(110)から該フランジ部に向かって逆ハ字形又は逆凸字形で、この逆ハ字形又は逆凸字形に広がる貫通孔 (13) はフランジ部側貫通孔 (13a) だけとし、一方、前記突出部 (22) は、主要部の帯状部 (221) が開口フレーム部 (21) から延び且つ該突出部の基端部分の断面形状が前記側面視形状に対応して前記貫通孔に嵌合する形状であると、この車両用換気装置を車体パネルに組付け固定すれば、貫通孔の形状そのものがストッパ機能を発揮し外れ難くなる。
【０００７】
【発明の実施の形態】
以下、本発明に係る車両用換気装置について詳述する。図１〜図８は、本発明の車両用換気装置（以下、単に「換気装置」とうい。）の一形態で、図１はその分解斜視図、図２は図１の縦断面図、図３は車体パネルに換気装置を組み付けた縦断面図、図４は別態様の換気装置の分解斜視図、図５は図４の枠本体のフランジ部の正面図、図６（イ）は図５の貫通孔と突出部の拡大図で、（ロ）は別形態の貫通孔と突出部の拡大図である。図７はまた別形態の換気装置の縦断面図、図８は（イ）が保護リブを設けた別形態の換気装置の開口枠の側面図で、（ロ）が（イ）の開口枠を組み込んだ換気装置の縦断面図である。
【０００８】
（１）実施形態１
本実施形態の換気装置は、図１〜図３のごとくで、枠本体１と開口枠２とシート状弁体３とシール部材４とを具備する。該換気装置は車両後部に設けられた車体パネル５のボディ開口５０に枠本体１の筒部１１を挿入し、車外側５１からシール部材４を介在させて枠本体１,開口枠２を車室側５２に押し付け、開口枠２の突出部先端に設けた外向き突起２２２がボディ開口５０をくぐって車体パネル５の車室側内壁５２に係止することによって車体パネル５に組み付け固定される構成である（図１）。
【０００９】
枠本体１は、筒部１１とフランジ部１２とを備え、両者が一体成形される合成樹脂成形品になっている。筒部１１はボディ開口５０内に挿入できる四角筒状にして、筒部１１内が車室内空気を車外へ排出する排気口１１０を形成するようにしている。筒部１１のフランジ部１２との接続部分には上下各ニ箇所に開口枠２の突出部２２が嵌入する貫通孔１３が形成される。枠本体１のフランジ部１２に開口枠２の開口フレーム部２１を重ね合わせたとき、突出部２２に対向する位置に貫通孔１３が形成される。突出部２２は開口枠２を形成する合成樹脂の保有する弾発性を利用して、突出部先端の外向き突起２２２が図３の二点鎖線のように内側に撓んでフランジ部１２をくぐり、貫通孔１３に嵌入する。突起先端部分２２２ａは突起傾斜角を大きくとって貫通孔１３に嵌るようにしている。該突起先端部分２２２ａに対向する筒部１１側の貫通孔形成面を傾斜面１３５にして突出部２２が貫通孔１３に嵌合したとき、突起先端部分２２２ａと傾斜面１３５が当接するようにしている。貫通孔１３の幅を突出部２２の幅に一致させていることから貫通孔１３に突出部２２が嵌合すれば、貫通孔１３は突出部２２によって塞がれる状態となる。符号１１２,１１３は筒部１１内へ張り出す鍔状の弁シール部で、該弁シール部１１２,１１３は筒部１１の車室側の上壁端から筒部１１の車外側の下壁端に向かって下降傾斜面を形成する。本実施形態は枠本体１に上側の弁シール部１１２と左右側壁の弁シール部１１３とを形成し、下側の弁シール部は開口枠２側に設けている。符号１１９は上側弁シール部１１２の根元に形成したシート状弁体３用の長孔、符号１４は水切り部を示す。
【００１０】
フランジ部１２は前記筒部１１の車外側外周縁を外方に所定幅だけ延設した外向きフランジになっている。換気装置が車体パネル５に組み付けられるとき、該フランジ部１２はシール部材４を介在させて車体パネル５の外側に配される。前記筒部側貫通孔１３ｂがフランジ部１２に当たる部分は、フランジ部１２の車外側に通り抜けていて、フランジ部側貫通孔１３ａになる。すなわちフランジ部１２から前記筒部１１にかかる部位に貫通孔１３が形成された格好になっている。フランジ部側貫通孔１３ａは筒部１１の板厚部分の高さにし、またその幅は突出部２２の幅に合わしており筒部側貫通孔１３ｂと同幅でつながっている。貫通孔１３の車外側から車室内側への側面視形状は、排気口１１０からフランジ部１２に向かって冂字形で（図１）、フランジ部１２の内縁１２１側に形成される。
【００１１】
開口枠２は開口フレーム部２１と突出部２２が一体成形された合成樹脂成形品である。開口フレーム部２１は前記フランジ部１２に対応する大きさの四角形枠体で、該開口フレーム部２１をフランジ部１２に重ね合わすことができる（図１,図２）。開口フレーム部２１の開口２０の大きさは筒部１１の排気口１１０の断面大きさと一致する。
突出部２２は該開口フレーム部２１の内周縁に、外向き突起２２２を先端に形成して立設する帯板部である。ここでは、前記貫通孔１３に対応する位置で、開口フレーム部２１内周縁の上下各ニ箇所に開口フレーム部２１から直角起立する突出部２２を形成する。該突出部２２は主要部の帯状部２２１が一定幅で開口フレーム部２１から延び、そして先端部分に楔状外向き突起２２２を形成する。前記枠本体１を車体パネル５の車外側５１にシール部材４を介して配し、さらにその車外側から突出部２２を前記貫通孔１３に挿入し、外向き突起２２２を貫通孔１３近傍の車体パネル車室側内壁５２に係止させることにより車体パネル５に枠本体１,開口枠２を固定できるようにしている。開口枠２の四角形開口２０を形成する下縁部分は斜面２１１になっていて、車体パネル５に枠本体１,開口枠２が組み付け固定されたとき（図３）、前記上側の弁シール部１１２と左右側壁の弁シール部１１３と該斜面２１１がつながり排気口１１０を取り囲む傾斜面の内鍔となり、シート状弁体３が枠本体１に取付けられると、そのシート状弁体外周縁の四方周囲に前記内鍔が当接できる構成になっている。
【００１２】
シート状弁体３は排気口１１０に蓋をし車室内圧力の高まりに応じて排気口１１０を開放するようにして前記枠本体１に取着される薄板状体である。ここでのシート状弁体３は特開平７−１７９１１８号のフラップ形状のものを採用し、四角形の蓋部３２の上縁部分の三箇所に吊足部を介して三角形の傘部３１を延設したゴム製シート板になっている。前記開口枠２の長孔１１９に傘部３１を枠本体１の筒部１１内から挿入し、傘部３１が長孔１１９を通過すると、傘部底辺がゴムのもつ弾性復元によって長孔１１９から抜脱不能となる。吊足部は長孔１１９長さより若干短く、傘部３１が長孔１１９周りの筒部１１に載った状態で、シート状弁体３が吊設される。蓋部３２は前記排気口１１０を覆う大きさがあり、車両停止時等にあってはシート状弁体３が垂れ下がり蓋部３２で筒部１１の排気口１１０に蓋をする。シート状弁体３の周縁が弁シール部１１２,１１３及び斜面２１１に当接して外部から車室内に異物等が侵入しないようにする。そして、走行等で車室内圧力が車外圧より高くなると、傘部３１の下縁を支点にシート状弁体３が傾動して排気口１１０から離れ（図３）、車室内の通風が行えるようになっている。シート状弁体３の枠本体１への取着方法についてはこれに限らず、例えば特開平５−１８５４９１号の記載技術にあるように上側シール部に所定間隔で取付孔を設けると共に該取付孔に対応するシート状弁体３にも取付孔を設けて、取付けボスをシート状弁体３の取付孔に挿入し、さらに上側シール部の取付孔に挿入した後、上側シール部の車室側に露出した部分を熱カシメ等によって、枠本体１にシート状弁体３を取付け固定することもできる。
【００１３】
シール部材４は、換気装置が車体パネル５に組み付け固定されるとき、前記枠本体１のフランジ部１２の車室側に取り付けられるガスケットである。シール部材４は排気口１１０より大きく且つフランジ部１２外形より一回り小さな四角形枠状体である。シール部材４にはシール機能を発揮すべくクッション性に富むゴム,ウレタン,ポリエチレン等の発泡体が用いられる。シール部材４には低発泡のものから高発泡のものまであらゆるものを使用できるが、本発明では密度が５０ｋｇ／ｍ^３以上の高発泡で高弾性の発泡品からなるシール部材４がより好ましくなっている。換気装置は既述のごとく車体パネル５のボディ開口５０に車外側からシール部材４を介在させて該シール部材４を圧縮させるようにして枠本体１,開口枠２を車室側に押し付け、開口枠２の突出部先端に設けた外向き突起２２２がボディ開口５０をくぐって車体パネル５の車室側内壁５２に係止することによって車体パネル５に組み付け固定されるものであり、シール部材４が高発泡で高弾性であると、前記圧縮されたシール部材４の弾性復元力で外向き突起２２２の車室側内壁５２への係止がより強力になり、換気装置自身の車体パネル５への確実な固定に加え、止水性向上をも図れるからである。
【００１４】
（２）実施形態２
本実施形態は図４に示すような換気装置である。ここでは、前記フランジ部１２に形成された貫通孔１３の車外側からの側面視形状を、前記排気口１１０からフランジ部１２に向かって逆ハ字形とする。実施形態１の貫通孔１３は車外側からの側面視形状を冂字形とし異にするが、下辺開放地点１３１では両者とも同じ貫通孔１３長さにする。しかし、本実施形態の貫通孔１３はこの地点からフランジ部１２外方に向かうにつれ貫通孔側辺１３２を逆ハ字状に広げる貫通孔１３とする。逆ハ字状に広げられる貫通孔１３はフランジ部側貫通孔１３ａだけであり、筒部側貫通孔１３ｂは実施形態１と同じである。
【００１５】
そして、突出部２２の基端部分の断面形状を前記フランジ部側貫通孔１３ａの側面視形状に対応して貫通孔１３に嵌合する断面形状とする（図６のイ）。突出部２２が貫通孔１３に嵌合した際、フランジ部１２の位置におさまる突出部２２の部位を他の一般部より逆ハ字状に張り出し、嵌合張り出し部分２２１ａとする。フランジ部側貫通孔１３ａを逆ハ字形にし、且つフランジ部側貫通孔１３ａにおさまる突出部２２の部位を逆ハ字状に張り出す構造にすると、貫通孔１３に突出部２２が嵌合して、車体パネル５に換気装置が組付け固定されれば外れにくくなる。突出部２２が位置決め固定されることによって走行中の振動等に対しても枠本体１と開口枠２がガタつかなくなる。
【００１６】
車体パネル５に換気装置が組付け固定されることにより外れにくくなる構造に関しては、他に図６（ロ）のようにフランジ部１２に形成された貫通孔１３の車外側からの側面視形状を、排気口１１０からフランジ部１２に向けて逆凸字形にして、且つ前記突出部２２の基端部分の断面形状をこの逆凸字形に対応する形状にしたものであってもよい。突出部２２の基端部分だけがフランジ部側貫通孔１３ａに対応して嵌合張り出し部分２２１ａが設けられる。嵌合張り出し部分２２１ａ以外の突出部２２の他部分は実施形態１と同様である。このような構成の換気装置も車体パネル５に組付け固定されれば外れにくくなる。
他の構成は実施形態１と同様でその説明を省く。実施形態１と同一符号は同一又は相当部分を示す。
【００１７】
（３）実施形態３
本実施形態は図７に示すような換気装置で、実施形態１の換気装置に補強リブ２３を加えたものである。開口フレーム部２１に接続する突出部２２の基端部分に補強リブ２３を設けている。従来の図１０に見られる係止爪６３の場合、樹脂収縮が原因で矢印方向に内倒れする傾向にある。図１０の従来品では内倒れ防止用に補強リブを設けると、車体パネル５にこの換気装置を組み付けるときに荷重が増し、組付け困難になる。これに対し、本発明では組付け作業性を維持しながら図示のごとくの補強リブ２３を設けることが可能になっている。
【００１８】
（４）実施形態４
本実施形態は図８,図９に示すような換気装置で、実施形態１の換気装置の開口枠２に保護リブ２４を一体成形で設けたものである。開口枠２の車外側に所定間隔をおいて、弓状の保護リブ２４を複数本（ここでは３本）形成している。換気装置は開口枠２が主要部の枠本体１と別体になっていることから開口枠２に簡単に保護リブ２４を一体成形できるようになっている。
従来、換気装置を組み立てて運搬する際、上側に載置された換気装置の枠体６がズレ落ち、下側の換気装置のシート状弁体３に乗って該シート状弁体３を変形させる不具合があった。こうした不具合は保護リブ２４を設けることによって簡単に解消できるようになる。
【００１９】
（５）効果
このように構成した換気装置は、車体パネル５に設けられたボディ開口５０を最大限有効活用できる。図３に示すように、車体パネル５に本換気装置が組付け固定されると、ボディ開口５０を狭めるのは枠本体１の厚みｂと弁シール部１１２の部分ｃだけであって、従来大きくボディ開口５０を狭める要因になっていた係止爪６３に相当する突出部２２はボディ開口５０を狭める要因になっていない。ボディ開口５０を大きく取れるようになり、車室内圧力を効率良く車外に開放,排出できる。高通気効率の換気装置になる。実際、ボディ開口５０が２００ｍｍ×６５ｍｍの車両に従来の換気装置を組付ければ、シート状弁体３の開口面積が７５ｃｍ^２になって通気効率が６０％であったのに対し、本発明の換気装置を組付け固定すれば、シート状弁体３の開口面積が８５ｃｍ^２になって通気効率が６５％にアップしている。
【００２０】
さらに、実施形態２のようにフランジ部側貫通孔１３ａを、下辺開放１３１の逆ハ字形又は逆凸字形の側面視形状にし、且つ突出部２２の基端部分の断面形状を前記側面視形状に対応して貫通孔１３に嵌合する形状とすると、車体パネル５に本換気装置を組付け固定すれば外れ難くなる。車両走行中の振動等が加わっても、フランジ部側貫通孔１３ａが逆ハ字形又は逆凸字形の側面視形状にして、且つ突出部２２の基端部分がフランジ部側貫通孔１３ａに対応して該貫通孔１３に嵌合しているので、枠本体１に開口枠２は位置決め固定されガタツキ音がでない。
【００２１】
尚、本発明においては、前記実施形態に示すものに限られず、目的，用途に応じて本発明の範囲で種々変更できる。枠本体１,開口枠２,シート状弁体３,シール部材４等の形状，大きさ，材質等は用途に合わせて本発明の範囲内で適宜選択できる。実施形態では突出部２２を開口枠２の上下に設け、これに対応して貫通孔１３も筒部１１の上下に設けたが、突出部２２を開口枠２の左右に設け、これに対応して貫通孔１３も筒部１１の左右に設けることができる。
【００２２】
【発明の効果】
以上のごとく、本発明の車両用換気装置は、これを車両パネルに組付け固定する役目を果たす突出部がボディ開口を少しも狭めることがなく、ボディ開口を最大限有効活用でき極めて有益となる。
【図面の簡単な説明】
【図１】実施形態１の車両用換気装置の分解斜視図である。
【図２】図１の縦断面図である。
【図３】車体パネルに換気装置を組み付けた縦断面図である。
【図４】実施形態２の車両用換気装置の分解斜視図である。
【図５】図４の枠本体のフランジ部の正面図である。
【図６】（イ）は図５の貫通孔と突出部の拡大図で、（ロ）は別形態の貫通孔と突出部の拡大図である。
【図７】実施形態３の車両用換気装置の縦断面図である。
【図８】実施形態４の車両用換気装置で、（イ）が保護リブを設けた別形態の換気装置の開口枠の側面図で、（ロ）が（イ）の開口枠を組み込んだ換気装置の縦断面図である。
【図９】従来技術の説明縦断面図である。
【図１０】（イ）が図９の部分拡大で、（ロ）がボディ開口の説明図である。
【符号の説明】
１枠本体
１１筒部
１１０排気口
１２フランジ部
１２１フランジ部内縁
１２２フランジ部外縁
１３貫通孔
１３ａフランジ部側貫通孔
１３ｂ筒部側貫通孔
２開口枠
２１開口フレーム部
２２突出部
２２１帯状部
２２２外向き突起
３シート状弁体
４シール部材
５車体パネル
５０ボディ開口[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle ventilator that is provided to release pressure in a vehicle compartment when a door of an automobile or the like is opened or closed.
[0002]
[Prior art]
Behind the bumper at the rear of the automobile is a ventilator that releases the pressure in the passenger compartment when the door is opened and closed and replaces the air in the passenger compartment while the vehicle is running. Air entering from the front of the passenger compartment or the like is exhausted out of the vehicle intensively through the exhaust port 60 of the ventilation device (see FIG. 9). A seat valve 3 is attached to the opening frame 6 that forms the exhaust port 60. During traveling, the seat valve 3 changes the degree of opening according to the pressure difference between the inside and outside of the vehicle and adjusts the air volume. . Further, when the engine is stopped, particularly during idling, the seat valve 3 covers the exhaust port 60 so that exhaust gas, foreign matter, and the like do not enter the vehicle compartment from the outside.
Such a vehicle ventilator is usually a component that is not seen by the user and is sufficient if the performance is satisfied. Therefore, the assembly to the vehicle body is generally performed by a claw fitting 63 as shown in FIG. On the other hand, the ventilator is a valve that efficiently opens the vehicle interior pressure to the outside of the vehicle as described above, that is, a valve that requires high ventilation efficiency, and the performance is determined by how effectively the body opening 50 is used above all.
[0003]
[Problems to be solved by the invention]
However, in the case of the claw fitting 63, the body opening is narrowed to protect the mold slide when forming the claw portion. That is, as shown in FIGS. 9 and 10, the body opening 50 originally has a height h, and the portion a required for the claw portion 63, the frame thickness b of the ventilator, and the valve seal surface portion c are subtracted. Effective opening height. Since these exist above and below, the effective opening height is also reduced accordingly. The part a required for the claw part 63 is 3 to 5 mm, and the part a ₁ required for the mold slide protection is required to be at least 3 mm.
[0004]
The present invention solves the above-described problems, and an object of the present invention is to provide a vehicle ventilation device that can make the most effective use of a body opening.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the gist of the invention described in claim 1 is that the cylinder part (11) forming the exhaust port (110) for discharging the air in the vehicle interior to the outside of the vehicle and the outer peripheral edge of the cylinder part outward. extends to both a flange portion (12) which is disposed through the sealing member (4) on the outside of the vehicle body panel (5) is integrally molded Rutotomoni, the cylindrical flange portion (11) ( a through hole in the connection portion (13) is formed with 12), a portion thereof according to the through-hole cylindrical portion through hole (13b) hits the flange portion (12), passes through the exterior of the flange portion (12) the flange portion side through-hole frame body has become (13a) (1), a lid on the exhaust port (110), so as to open the exhaust port (110) in response to increasing vehicle cabin pressure the its inner circumferential edge so as to form a sheet-like valve body which is attached to the frame body (1) and (3), a synthetic resin molded article, said flange opening frame section of which size corresponds to the (12) (21) Outside, in multiple places Comprising orientation projection (222) protrusions formed on the front (22) provided upright opening frame (2), the outer seal member (4) is interposed from the vehicle body panel (5) with the body opening ( 50) The frame body (1) is arranged on the vehicle exterior side of the vehicle body panel (5) so that the cylindrical portion (11) is inserted into the tubular portion (11), and the protrusion (22 ) on the opening frame (2) from the vehicle exterior side. ) Is bent inward using the elasticity possessed by the synthetic resin, passes through the flange portion (12) and fits into the through hole (13) , and the outward projection (222) is inserted into the vehicle body panel (5). The vehicle ventilator is characterized in that the frame body (1) and the opening frame (2) can be fixed to the vehicle body panel (5) by being locked to the vehicle interior side inner wall (52). .
A vehicle ventilator according to a second aspect of the present invention is the vehicle ventilator according to the first aspect, wherein the shape of the through hole (13) formed in the flange portion (12) in a side view from the vehicle outer side is the flange from the exhaust port (110). The through hole (13) spreading in the reverse H shape or the reverse convex shape toward the part is the flange part side through hole (13a) only, while the protrusion (22) is band-like portion of the main portion (221) of the cross-sectional shape of the base end portion of and the protruding portion extending from the opening frame section (21) corresponding to the side view shape, fitted into the through hole (13) shape It is characterized by being.
[0006]
As in the first aspect of the present invention , a through hole (13) is formed in a connection portion between the cylindrical portion (11) and the flange portion (12), and the cylindrical portion side through hole (13b) related to the through hole is formed in the flange portion ( The part corresponding to 12) is a frame body (1) that passes through the outside of the flange part (12) and forms a through hole (13a) on the flange part side, and a synthetic resin molded product, and corresponds to the flange part (12) . opening frame portion size as the protruding portion that forms an outward projection (the 222) to the tip at a plurality of positions of the inner peripheral edge to form a (21) (22) opening frame erected (2), the comprising of Then, the projecting portion (22) related to the opening frame (2) is bent inward using the elasticity of the synthetic resin and passes through the flange portion (12) and is inserted into the through hole (13) . If the frame body and the opening frame can be fixed to the vehicle body panel by engaging the outward projection with the vehicle interior panel inner wall, the protruding portion of the outward projection protrudes from the vehicle interior wall. The main part of the projecting part can be absorbed according to the thickness of the frame body, so that the part that locks the vehicle ventilation device to the vehicle body panel does not narrow the body opening, Maximum use of the aperture.
As in the second aspect of the invention, the shape of the through-hole (13) formed in the flange portion (12) in a side view from the vehicle outer side is an inverted C shape or reverse from the exhaust port (110) toward the flange portion. a convex shape, a through hole extending to the inverted tooth shape or inverted convex shape (13) is only the flange portion side through-hole (13a), whereas, the protrusion (22) is strip-shaped portion of the main portion (221) When the cross-sectional shape of the base end portion of and extending from the opening frame section (21) said protrusion is configured to fit into the through-hole corresponding to the side view shape, set the vehicle ventilating device to the vehicle body panel If attached and fixed, the shape of the through hole itself exhibits a stopper function and is difficult to come off.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the vehicle ventilator according to the present invention will be described in detail. 1 to 8 show an embodiment of a vehicle ventilator (hereinafter simply referred to as “ventilator”) according to the present invention. FIG. 1 is an exploded perspective view thereof, and FIG. 2 is a longitudinal sectional view of FIG. 3 is a longitudinal sectional view in which a ventilation device is assembled to a vehicle body panel, FIG. 4 is an exploded perspective view of another type of ventilation device, FIG. 5 is a front view of the flange portion of the frame body of FIG. 4, and FIG. (B) is an enlarged view of another form of the through hole and the protruding portion. FIG. 7 is a longitudinal sectional view of another type of ventilator, FIG. 8 is a side view of an opening frame of another type of ventilator provided with a protective rib, and (b) is an opening frame of (a). It is a longitudinal cross-sectional view of the incorporated ventilation apparatus.
[0008]
(1) Embodiment 1
As shown in FIGS. 1 to 3, the ventilation device of the present embodiment includes a frame body 1, an opening frame 2, a sheet-like valve body 3, and a seal member 4. The ventilation device inserts the cylinder portion 11 of the frame main body 1 into the body opening 50 of the vehicle body panel 5 provided at the rear of the vehicle, and the frame main body 1 and the opening frame 2 are connected to the vehicle interior via the seal member 4 from the vehicle outer side 51. A structure in which the outward projection 222 provided on the front end of the projecting portion of the opening frame 2 passes through the body opening 50 and engages with the vehicle interior side inner wall 52 to be assembled and fixed to the vehicle body panel 5. (FIG. 1).
[0009]
The frame body 1 includes a cylindrical portion 11 and a flange portion 12, and is a synthetic resin molded product in which both are integrally molded. The cylinder part 11 is formed in a square cylinder shape that can be inserted into the body opening 50, and the inside of the cylinder part 11 forms an exhaust port 110 for discharging the air in the vehicle interior to the outside of the vehicle. A through-hole 13 into which the protruding portion 22 of the opening frame 2 is fitted is formed at each of the upper and lower portions at a connection portion between the cylindrical portion 11 and the flange portion 12. When the opening frame portion 21 of the opening frame 2 is superimposed on the flange portion 12 of the frame body 1, the through hole 13 is formed at a position facing the protruding portion 22. The protruding portion 22 utilizes the elasticity of the synthetic resin forming the opening frame 2, and the outward projection 222 at the tip of the protruding portion bends inward as shown by a two-dot chain line in FIG. Into the through hole 13. The protrusion tip portion 222a is fitted in the through hole 13 with a large protrusion inclination angle. When the projecting portion 22 is fitted into the through-hole 13 with the through-hole forming surface on the cylindrical portion 11 side facing the projecting tip portion 222a as the inclined surface 135, the projecting tip portion 222a and the inclined surface 135 are brought into contact with each other. Yes. Since the width of the through hole 13 is matched with the width of the protruding portion 22, if the protruding portion 22 is fitted into the through hole 13, the through hole 13 is blocked by the protruding portion 22. Reference numerals 112 and 113 are bowl-shaped valve seal portions projecting into the cylinder portion 11, and the valve seal portions 112 and 113 are arranged from the upper wall end of the cylinder portion 11 on the vehicle compartment side to the lower wall end of the cylinder portion 11 on the vehicle exterior side. A downwardly inclined surface is formed. In the present embodiment, an upper valve seal portion 112 and left and right side valve seal portions 113 are formed on the frame body 1, and a lower valve seal portion is provided on the opening frame 2 side. Reference numeral 119 denotes a long hole for the seat-like valve body 3 formed at the base of the upper valve seal part 112, and reference numeral 14 denotes a draining part.
[0010]
The flange portion 12 is an outward flange in which the outer peripheral edge of the cylinder portion 11 is extended outward by a predetermined width. When the ventilation device is assembled to the vehicle body panel 5, the flange portion 12 is arranged outside the vehicle body panel 5 with the seal member 4 interposed therebetween. The portion where the tubular portion side through hole 13b hits the flange portion 12 passes through the outside of the flange portion 12 and becomes the flange portion side through hole 13a. That is, the through hole 13 is formed in a portion from the flange portion 12 to the cylindrical portion 11. The flange-side through-hole 13a is set to the height of the plate-thickness portion of the cylindrical portion 11, and the width thereof matches the width of the protruding portion 22, and is connected to the cylindrical-portion-side through hole 13b with the same width. A side view shape of the through hole 13 from the vehicle exterior side to the vehicle interior side is a square shape from the exhaust port 110 toward the flange portion 12 (FIG. 1), and is formed on the inner edge 121 side of the flange portion 12.
[0011]
The opening frame 2 is a synthetic resin molded product in which the opening frame portion 21 and the protruding portion 22 are integrally formed. The opening frame portion 21 is a rectangular frame having a size corresponding to the flange portion 12, and the opening frame portion 21 can be superimposed on the flange portion 12 (FIGS. 1 and 2). The size of the opening 20 of the opening frame portion 21 matches the cross-sectional size of the exhaust port 110 of the cylinder portion 11.
The projecting portion 22 is a band plate portion that is erected on the inner peripheral edge of the opening frame portion 21 by forming an outward projection 222 at the tip. Here, at the positions corresponding to the through holes 13, the protrusions 22 that stand up at right angles from the opening frame 21 are formed at the upper and lower portions of the inner periphery of the opening frame 21. The protruding portion 22 has a main band-shaped portion 221 extending from the opening frame portion 21 with a constant width, and a wedge-shaped outward projection 222 is formed at the tip portion. The frame main body 1 is disposed on the vehicle outer side 51 of the vehicle body panel 5 via the seal member 4, and the protruding portion 22 is inserted into the through hole 13 from the vehicle outer side, and the outward projection 222 is disposed in the vehicle body near the through hole 13. The frame main body 1 and the opening frame 2 can be fixed to the vehicle body panel 5 by being locked to the panel casing side inner wall 52. The lower edge portion forming the rectangular opening 20 of the opening frame 2 is a slope 211, and when the frame body 1 and the opening frame 2 are assembled and fixed to the vehicle body panel 5 (FIG. 3), the upper valve seal portion 112 is arranged. When the seat-like valve body 3 is attached to the frame body 1, the valve seal portion 113 on the left and right side walls and the slope 211 are connected to each other to form the inner surface of the inclined surface surrounding the exhaust port 110. The inner collar can be brought into contact.
[0012]
The sheet-like valve body 3 is a thin plate-like body that is attached to the frame body 1 so as to cover the exhaust port 110 and open the exhaust port 110 in response to an increase in the pressure inside the vehicle compartment. Here, the sheet-like valve body 3 employs a flap shape disclosed in Japanese Patent Application Laid-Open No. 7-179118, and the triangular umbrella portion 31 is extended to three places on the upper edge portion of the quadrangular lid portion 32 via suspension legs. It is a rubber sheet plate. When the umbrella part 31 is inserted into the long hole 119 of the opening frame 2 from the inside of the cylindrical part 11 of the frame main body 1 and the umbrella part 31 passes through the long hole 119, the bottom of the umbrella part is removed from the long hole 119 by elastic restoration of the rubber. It becomes impossible to withdraw. The suspension leg portion is slightly shorter than the length of the long hole 119, and the seat-like valve body 3 is suspended in a state where the umbrella portion 31 is placed on the cylindrical portion 11 around the long hole 119. The lid portion 32 is large enough to cover the exhaust port 110, and when the vehicle is stopped, the seat-like valve body 3 hangs down and covers the exhaust port 110 of the cylinder portion 11 with the lid portion 32. The periphery of the sheet-like valve body 3 abuts against the valve seal portions 112 and 113 and the inclined surface 211 so that foreign matter or the like does not enter the vehicle compartment from the outside. When the vehicle interior pressure becomes higher than the vehicle exterior pressure due to traveling or the like, the seat-like valve body 3 tilts away from the exhaust port 110 with the lower edge of the umbrella portion 31 as a fulcrum (FIG. 3), so that the vehicle interior can be ventilated. It has become. The method for attaching the sheet-like valve body 3 to the frame body 1 is not limited to this, and for example, as described in Japanese Patent Laid-Open No. 5-185491, mounting holes are provided at predetermined intervals in the upper seal portion and the mounting holes are provided. The seat-like valve body 3 corresponding to the above is provided with a mounting hole, the mounting boss is inserted into the mounting hole of the seat-like valve body 3, and further inserted into the mounting hole of the upper seal portion, and then the vehicle side of the upper seal portion The sheet-like valve element 3 can be attached and fixed to the frame body 1 by heat caulking or the like at the exposed part.
[0013]
The seal member 4 is a gasket attached to the passenger compartment side of the flange portion 12 of the frame body 1 when the ventilation device is assembled and fixed to the vehicle body panel 5. The seal member 4 is a rectangular frame that is larger than the exhaust port 110 and slightly smaller than the outer shape of the flange portion 12. The seal member 4 is made of foam, such as rubber, urethane, polyethylene, etc., which has a high cushioning property so as to exhibit a sealing function. Any material can be used as the sealing member 4 from a low foaming material to a high foaming material, but in the present invention, the sealing member 4 made of a highly foamed and highly elastic foamed product having a density of 50 kg / m ³ or more is more preferable. ing. As described above, the ventilating device presses the frame body 1 and the opening frame 2 against the vehicle compartment side so as to compress the sealing member 4 through the body opening 50 of the vehicle body panel 5 from the outside of the vehicle. The outward projection 222 provided at the tip of the projecting portion of the frame 2 passes through the body opening 50 and engages with the vehicle interior side wall 52 of the vehicle body panel 5 to be assembled and fixed to the vehicle body panel 5. Is highly foamed and highly elastic, the elastic restoring force of the compressed seal member 4 strengthens the locking of the outward projection 222 to the vehicle interior side wall 52, and the ventilation device itself has the body panel 5. This is because, in addition to the reliable fixation, the water stoppage can be improved.
[0014]
(2) Embodiment 2
This embodiment is a ventilation apparatus as shown in FIG. Here, the side view shape from the vehicle outer side of the through hole 13 formed in the flange portion 12 is an inverted C shape from the exhaust port 110 toward the flange portion 12. The through holes 13 of the first embodiment are different from each other in the shape of a side view from the outside of the vehicle, but both have the same through hole 13 length at the lower side opening point 131. However, the through-hole 13 of the present embodiment is a through-hole 13 that widens the side-side 132 of the through-hole in an inverted C shape from this point toward the outside of the flange portion 12. The through-hole 13 that is widened in an inverted C shape is only the flange-side through-hole 13a, and the cylinder-side through-hole 13b is the same as in the first embodiment.
[0015]
And the cross-sectional shape of the base end part of the protrusion part 22 is made into the cross-sectional shape fitted to the through-hole 13 corresponding to the side view shape of the said flange part side through-hole 13a (a of FIG. 6). When the protruding portion 22 is fitted into the through-hole 13, the portion of the protruding portion 22 that fits in the position of the flange portion 12 protrudes in an inverted C shape from the other general portions to form a fitting protruding portion 221a. When the flange part side through-hole 13a is formed in an inverted C shape, and the projecting part 22 portion that fits in the flange part side through hole 13a is projected in an inverted C shape, the projecting part 22 is fitted into the through hole 13. If the ventilation device is assembled and fixed to the vehicle body panel 5, it becomes difficult to come off. Since the protrusion 22 is positioned and fixed, the frame body 1 and the opening frame 2 do not rattle against vibration or the like during traveling.
[0016]
Regarding the structure that is difficult to come off when the ventilation device is assembled and fixed to the vehicle body panel 5, the shape of the through hole 13 formed in the flange portion 12 from the vehicle outer side as shown in FIG. In addition, a reverse convex shape from the exhaust port 110 toward the flange portion 12 may be used, and a cross-sectional shape of the base end portion of the protruding portion 22 may be a shape corresponding to the reverse convex shape. Only the base end portion of the protruding portion 22 is provided with a fitting overhang portion 221a corresponding to the flange-side through hole 13a. Other portions of the protruding portion 22 other than the fitting overhang portion 221a are the same as those in the first embodiment. The ventilator having such a configuration is also difficult to be detached if it is assembled and fixed to the vehicle body panel 5.
Other configurations are the same as those of the first embodiment, and the description thereof is omitted. The same reference numerals as those in the first embodiment denote the same or corresponding parts.
[0017]
(3) Embodiment 3
This embodiment is a ventilator as shown in FIG. 7, and is obtained by adding a reinforcing rib 23 to the ventilator of the first embodiment. Reinforcing ribs 23 are provided at the base end portion of the protruding portion 22 connected to the opening frame portion 21. In the case of the conventional locking claw 63 shown in FIG. 10, there is a tendency to fall in the direction of the arrow due to resin contraction. In the conventional product of FIG. 10, if reinforcing ribs are provided to prevent inward collapse, the load increases when the ventilation device is assembled to the vehicle body panel 5, and the assembly becomes difficult. On the other hand, in the present invention, it is possible to provide the reinforcing rib 23 as shown while maintaining the assembly workability.
[0018]
(4) Embodiment 4
This embodiment is a ventilator as shown in FIGS. 8 and 9, and a protective rib 24 is integrally formed on the opening frame 2 of the ventilator of the first embodiment. A plurality (three in this case) of arcuate protective ribs 24 are formed at predetermined intervals on the vehicle outer side of the opening frame 2. Since the opening frame 2 is separate from the main frame body 1 in the ventilation device, the protective rib 24 can be easily formed integrally with the opening frame 2.
Conventionally, when assembling and transporting a ventilator, the frame 6 of the ventilator placed on the upper side slips down and rides on the seat-like valve element 3 of the lower ventilator to deform the sheet-like valve element 3. There was a bug. Such a problem can be easily solved by providing the protective rib 24.
[0019]
(5) Effect The ventilator configured as described above can make maximum use of the body opening 50 provided in the vehicle body panel 5. As shown in FIG. 3, when the ventilation device is assembled and fixed to the vehicle body panel 5, the body opening 50 is narrowed only by the thickness b of the frame body 1 and the portion c of the valve seal portion 112, which is larger than before. The protrusion 22 corresponding to the locking claw 63 that has been a factor for narrowing the body opening 50 is not a factor for narrowing the body opening 50. The body opening 50 can be made large, and the pressure inside the vehicle can be efficiently released and discharged outside the vehicle. It becomes a ventilation device with high ventilation efficiency. In fact, when a conventional ventilator is assembled to a vehicle having a body opening 50 of 200 mm × 65 mm, the opening area of the seat-like valve body 3 is 75 cm ² and the ventilation efficiency is 60%. If the ventilation device is assembled and fixed, the opening area of the sheet-like valve body 3 is 85 cm ² and the ventilation efficiency is increased to 65%.
[0020]
Further, as in the second embodiment, the flange portion side through-hole 13a is formed in a reverse side-shaped or reverse-convex shape of the lower side opening 131, and the cross-sectional shape of the base end portion of the protruding portion 22 is the side-view shape. If the shape is fitted to the through hole 13 correspondingly, the ventilation device is attached to the vehicle body panel 5 and fixed, so that it is difficult to come off. Even when vibration or the like is applied during traveling of the vehicle, the flange-side through-hole 13a has a reverse side or reverse-convex shape in side view, and the base end portion of the protrusion 22 corresponds to the flange-side through-hole 13a. Thus, the opening frame 2 is positioned and fixed to the frame main body 1 and does not rattle.
[0021]
In addition, in this invention, it is not restricted to what is shown to the said embodiment, According to the objective and a use, it can change variously in the range of this invention. The shape, size, material, and the like of the frame body 1, the opening frame 2, the sheet-like valve body 3, the seal member 4 and the like can be appropriately selected within the scope of the present invention in accordance with the application. In the embodiment, the protrusions 22 are provided above and below the opening frame 2, and the corresponding through holes 13 are also provided above and below the cylinder portion 11. However, the protrusions 22 are provided on the left and right sides of the opening frame 2 and correspond to this. The through holes 13 can also be provided on the left and right sides of the cylindrical portion 11.
[0022]
【The invention's effect】
As described above, the vehicle ventilator according to the present invention is extremely useful because the projecting portion that serves to assemble and fix the vehicle ventilator to the vehicle panel does not narrow the body opening at all, and can make the most effective use of the body opening. .
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a vehicle ventilator according to a first embodiment.
FIG. 2 is a longitudinal sectional view of FIG.
FIG. 3 is a longitudinal sectional view in which a ventilation device is assembled to a vehicle body panel.
FIG. 4 is an exploded perspective view of a vehicle ventilation device according to a second embodiment.
5 is a front view of a flange portion of the frame main body of FIG. 4. FIG.
6A is an enlarged view of the through hole and the protruding portion of FIG. 5, and FIG. 6B is an enlarged view of the through hole and the protruding portion of another form.
FIG. 7 is a longitudinal sectional view of a vehicle ventilation device according to a third embodiment.
FIG. 8 is a side view of an opening frame of a ventilator of another form in which a protective rib is provided, in which (b) is a ventilation device incorporating the opening frame of (a) in the vehicle ventilation device of the fourth embodiment. It is a longitudinal cross-sectional view of an apparatus.
FIG. 9 is a longitudinal sectional view for explaining the prior art.
10A is a partially enlarged view of FIG. 9, and FIG. 10B is an explanatory view of a body opening.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Frame main body 11 Tube part 110 Exhaust port 12 Flange part 121 Flange part inner edge 122 Flange part outer edge
13 Through hole
13a Flange side through hole
13b Tube part side through-hole 2 Opening frame 21 Opening frame part 22 Protruding part
221 Band-shaped part 222 Outward projection 3 Sheet-like valve body 4 Seal member 5 Body panel 50 Body opening

Claims

A cylinder part (11 ) that forms an exhaust port (110) that discharges vehicle interior air to the outside of the vehicle and an outer peripheral edge of the cylinder part are extended outward, and a seal member (4) is provided outside the vehicle body panel (5). through both formed integrally provided with a flange portion (12) which is disposed in Rutotomoni, through hole in the connection portion of the flange portion (12) of said tubular portion (11) (13) is formed, the through partial cylinder side through hole of the hole (13b) hits the flange portion (12), frame body has become the flange portion side through hole through the exterior of the flange portion (12) (13a) and (1) ,
Wherein the lid to the exhaust port (110), a sheet-like valve body which is attached to the frame body (1) so as to open the exhaust port (110) in response to increasing vehicle cabin pressure and (3),
In a synthetic resin molded product, an opening frame part (21) having a size corresponding to the flange part (12) is formed, and at a plurality of locations on the inner peripheral edge, an outward projection (222) is formed at the tip ( 22) and an open frame (2) erected ,
Insert the cylinder part (11) into the body opening (50 ) with the seal member (4) interposed from the outside of the vehicle body panel (5) so that the frame body (1) is placed outside the vehicle body panel (5). Further, the projecting portion (22) related to the opening frame (2) from the outside of the vehicle is bent inward using the elasticity possessed by the synthetic resin, passes through the flange portion (12) , and passes through the through hole. The frame body (1) and the opening frame (2) are fitted to the vehicle body panel by engaging the outer projection (222) with the vehicle interior side wall (52) of the vehicle body panel (5). A vehicle ventilator characterized in that it can be fixed to (5) .

A side view shape of the exterior of the flange portion (12) to the through hole formed (13), with the exhaust port (110) opposite toward the flange portion from the C-shaped or inverted convex shape, the inverted tooth shaped or inverted convex shape in spread through-hole (13) is only the flange portion side through-hole (13a), whereas, the protrusion (22) is strip-shaped portion of the main portion (221) of the opening frame section (21) extending and cross-sectional shape of the base end portion of the protrusion corresponds to the side view shape, the through-hole (13) for a vehicle ventilation system according to claim 1, wherein a shape to be fitted to.