JP3830039B2

JP3830039B2 - Weather Strip

Info

Publication number: JP3830039B2
Application number: JP2002282057A
Authority: JP
Inventors: 洋治折本; 良井上
Original assignee: Honda Motor Co Ltd; Nishikawa Rubber Co Ltd
Current assignee: Honda Motor Co Ltd; Nishikawa Rubber Co Ltd
Priority date: 2002-09-26
Filing date: 2002-09-26
Publication date: 2006-10-04
Anticipated expiration: 2022-09-26
Also published as: JP2004114873A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のドア開口縁部に設けられたフランジに取付けられ、ドアと車体との隙間をシールするウェザーストリップに関する。
【０００２】
【従来の技術】
自動車のドア開口縁部に設けられたフランジには、図７及び図８に示すようなウェザーストップ１０，２０が取付けられ、ドアと弾接してドアと車体との隙間をシールしている。
ウェザーストリップ１０，２０は、フランジに取付けられる断面略Ｕ字状の取付基部１１，２１に、直接ドアに接する中空シール部１２，２２が一体成形されてなるものであり、中空シール部１２，２２の断面形状としては、図７に示す環状のものや、図８に示すパンタグラフ状のものが広く知られている。
【０００３】
このような、図７，図８に示す断面形状の中空シール部１２，２２における、荷重曲線は、図９に示すようなグラフになっている。すなわち、中空シール部１２，２２がドアと弾接した直後は、荷重は一時的に大きくなるものの、中空シール部１２，２２自体、その中空部を完全に潰して取付基部１１，２１側に底突きするほど大きく変形するものではないため、その後は略平担状であり、底突きが発生するまではさらに急激に荷重が上昇することはない。
そのため、ドア閉時にオーバーストロークによるドアの振動が大きくなり、その振動音がドア閉時の閉まり音の悪化を招いていた。
【０００４】
また、図７，図８に示す断面形状の中空シール部１２，２２では、コーナー部におけるＲ追従性が悪く中空シール部１２，２２がコーナー内側に倒れるので、図７に示すような折れしわ１５を発生させるという問題があった。
これを防止するためには、中空シール部１２，２２にパッドなどの副資材を挿入することなどが行われ、その分、コストがかかっていた。
【０００５】
これに対して、パッドなどの副資材を挿入するのではなく、中空シール部の断面形状を工夫することによって、図７に示したような折れしわ１５の発生を部止したものがある（例えば、特許文献１参照）。
【０００６】
【特許文献１】
特開２００１−２８７６０１号公報（第３頁、図２，図４）
【０００７】
【発明が解決しようとする課題】
しかしながら、特開２００１−２８７６０１号公報に記載の発明によれば、折れしわ１５の発生を防止することはできるものの、ドアの振動に対する規制を十分果たすことはできない。
【０００８】
そこで本発明の目的は、Ｒ追従性がよく、しかもドア振動を規制して振動音の発生を低減することのできるウェザーストリップを提供することにある。
【０００９】
【課題を解決するための手段】
上記の目的を達成するために、本発明の請求項１に記載のウェザーストリップ（３０）は、自動車のドア開口縁部（１）に設けられたフランジ（２）に取付けられる断面略Ｕ字状の取付基部（３１）と、該取付基部（３１）の車外側一側面（３１ａ）のフランジ（２）先端側に一体成形されフランジ（２）先端側に向けて湾曲膨出する断面略く字状の第一柱部（３２）と、前記取付基部（３１）の車外側一側面（３１ａ）のフランジ（２）付け根部側に一体成形されフランジ（２）付け根部側に向けて湾曲膨出する断面略逆く字状の第二柱部（３３）と、および、前記第一柱部（３２）の先端と前記第二柱部（３３）の先端とで支持され、ドア（３）の閉時にドア（３）に弾接する中空部（３４）とを備え、
前記中空部（３４）の大きさを、前記第一柱部（３２）と第二柱部（３３）間に形成された空間（３９）の大きさよりも小さくし、ドア（３）が完閉状態になるにしたがって、前記第一柱部（３２）と第二柱部（３３）はさらに湾曲し、前記中空部（３４）が両柱部（３２，３３）間に形成された空間（３９）に入り込んで、前記取付基部（３１）の一側面（３１ａ）にも弾接するようにし、その前記取付基部（３１）の一側面（３１ａ）に対する中空部（３４）の弾接によって、中空部（３４）にかかる荷重を急激に上昇させたことを特徴とする。
【００１１】
また、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、前記第一柱部（３２）の先端を前記中空部（３４）の車外側に接続し、前記第二柱部（３３）の先端を前記中空部（３４）の車内側に接続したことを特徴とする。
【００１２】
さらに、請求項３に記載の発明は、請求項１又は２に記載の発明において、前記第二柱部（３３）の前記中空部（３４）への接続部付近の肉厚を、前記第一柱部（３２）の肉厚より薄くし、前記中空部（３４）が前記取付基部（３１）の一側面（３１ａ）に弾接したときに、前記中空部（３４）が前記取付基部（３１）の一側面（３１ａ）に対して前記フランジ（２）付け根部側の位置に納まるようにしたことを特徴とする。
【００１３】
括弧内の記号は、図面および後述する発明の実施の形態に記載された対応要素または対応事項を示す。
【００１４】
請求項１に記載の発明によれば、断面略く字状の第一柱部の先端と、断面略逆く字状の第二柱部の先端とで支持された中空部にドアが弾接すると中空部にかかる荷重は大きくなり、その後、ドアがさらに弾接すると第一柱部と第二柱部はさらに湾曲して中空部にかかる荷重を吸収するので、荷重はその後は略平担状であり、ドアが完閉付近になると中空部が両柱部（第一柱部と第二柱部）間に形成された空間に入り込んで、取付基部の車外側の一側面にも弾接するので、これにより荷重は急激に上昇する。
このように、中空部にかかる荷重を急激に上昇させると、ドア完閉時にオーバーストロークによるドア振動を、従来の環状やパンタグラフ状の中空シール部を有するウェザーストリップに比して小さく抑制することができるので、その結果、ドア閉時の閉まり音を抑えることができる。
【００１５】
また、空間を形成する両柱部の先端に中空部が設けられているので、たとえコーナー部にウェザーストリップを使用した場合でも、従来の環状やパンタグラフ状の中空シール部に比して中空部や両柱部のコーナー内側への倒れは小さいため、Ｒ追従性が特に悪くなることはなく、折れしわの発生が抑制される。
【００１６】
また、中空部の大きさを、第一柱部と第二柱部間に形成された空間の大きさよりも小さくしたので、中空部がドアに弾接して押されたときに空間内に確実に入り込み、その後、取付基部の一側面に弾接することを容易にする。
【００１７】
また、請求項２に記載の発明によれば、第一柱部の先端を中空部の車外側に接続し、第二柱部の先端を中空部の車内側に接続したので、第一柱部は中空部に対する略接線方向に沿って接続されることになり、その第一柱部の接続位置より車外側には段差は生じることなく、シール性が良い。また、第二柱部はフランジ付け根部側に大きくはみ出して変形することはなく、フランジ先端側にたわみ変形しやすくなる。
【００１８】
さらに、請求項３に記載の発明によれば、第二柱部の中空部への接続部付近の肉厚を、第一柱部の肉厚より薄くし、中空部が取付基部の一側面に弾接したときに、中空部が取付基部の一側面に対してフランジ付け根部側の位置に納まるようにしたので、第二柱部はフランジ付け根部側に大きくはみ出さず、フランジ先端側にたわみ変形しやすくすることがより確実になる。
【００１９】
括弧内の記号は、図面および後述する発明の実施の形態に記載された対応要素または対応事項を示す。
【００２０】
【発明の実施の形態】
本発明の実施の形態について図面を参照して説明する。
本発明の実施の形態に係るウェザーストリップ３０は、自動車のドア開口縁部１に設けられたフランジ２に取付けられ、ドア３に弾接して、図１から図５に示す順に変形する。フランジ２は図１の状態でドア閉時のドアガラスＧに略平行に設けられている。
【００２１】
ウェザーストリップ３０は、両側面３１ａ，３１ｂと底面３１ｃとからなる断面略Ｕ字状の取付基部３１と、取付基部３１の車外側に位置する一側面３１ａのフランジ２の先端側に、付け根部が一体成形されそのフランジ２の先端側に向けて湾曲膨出する断面略く字状の第一柱部３２と、取付基部３１の一側面３１ａのフランジ２の付け根部側に、付け根部が一体成形されフランジ２の付け根部側に向けて湾曲膨出する断面略逆く字状の第二柱部３３と、および、第一柱部３２の先端と第二柱部３３の先端とで支持され、ドア３の閉時にドア３に弾接する中空部３４とを備えている。
【００２２】
取付基部３１の両側面３１ａ，３１ｂの内側には、フランジ２を保持するリップ部３５，３６が形成され、側面３１ｂの外側には内装材４を覆うリップ部３７が形成されている。また、取付基部３１には、断面略Ｕ字状の芯金３８が埋設されている。
【００２３】
断面略く字状の第一柱部３２は、車外側の厚肉部３２ａと車内側の厚肉部３２ｂとからなり車外側の厚肉部３２ａの端部が中空部３４に、車内側の厚肉部３２ｂの端部が取付基部３１の車外側側面３１ａに接続されている。また、断面略く字状の第一柱部３２に対して、逆向きの断面略逆く字状の第二柱部３３は、厚肉部３３ａと薄肉部３３ｂとからなり厚肉部３３ａの端部は、取付基部３１の車外側側面３１ａの端部に、薄肉部３３ｂの端部は中空部３４に接続されている。
このように、第一柱部３２の中空部３４側を厚肉部３２ａにするとともに第二柱部３３の中空部３４側を薄肉部３３ｂをすることによって、中空部３４がドア３に弾接して押されたときに中空部３４が取付基部３１の側面３１ａに対してフランジ２の付け根部側の位置に納まるようにしてある。このとき第二柱部３３はフランジ付け根部側に大きくはみ出さず、フランジ先端側にたわみ変形しやすくなっている。
また、取付基部３１の側面３１ａにおいて、第一柱部３２の付け根部と第二柱部３３の付け根部との間隔は、ドア３に弾接して押された中空部３４が取付基部３１の側面３１ａに弾接できるように、中空部３４の幅よりも大きくしてある。
【００２４】
第一柱部３２の先端を中空部３４の車外側に接続し、第二柱部３３の先端を中空部３４の車内側に接続している。すなわち、図１で示すように、中空部３４の断面の略中央を通るように、フランジ２の延びる方向に略平行な基線ｍを引いた場合、その基線ｍよりも車外側となる中空部３４の位置に、第一柱部３２の先端を接続し、その基線ｍよりも車内側となる中空部３４の位置に、第二柱部３３の先端を接続している。
これによれば、第一柱部３２は中空部３４に対する略接線方向に沿って接続されることになり、その第一柱部３２の接続位置より車外側には段差は生じることはないので、シール性が良い。また、第二柱部３３はフランジ付け根部側に大きくはみ出して変形することなく、フランジ先端側にたわみ変形しやすくなる。
【００２５】
また、中空部３４の大きさは、第一柱部３２と第二柱部３３との間に形成された空間３９の大きさよりも小さくしてあり、中空部３４がドア３に弾接して押されたときに空間３９内に入り込むようにしてある。空間３９を形成する両柱部３２，３３の先端に中空部３４が設けられることによって、コーナー部にウェザーストリップ３０を使用した場合でもＲ追従性が特に悪くなることはなく、折れしわの発生が抑制される。
また中空部３４の車外側かつフランジ付け根部側には、突部４０を設けている。この突部４０を設けることにより、ボデーに対するドアの建付バラツキに対して、シール幅を広く取ることができるため、シール性が向上する。
【００２６】
そして、図１に示すウェザーストリップ３０の取付状態から、ドア３が徐々に閉じられ、ドア３が中空部３４に弾接すると、図２，図３に示すように、第一柱部３２と第二柱部３３は図１に示した場合よりも湾曲して、中空部３４は第一柱部３２と第二柱部３３との間に形成された空間３９に入り込む。そして、図４に示すように、ドア３が完閉状態になると、第一柱部３２と第二柱部３３はさらに湾曲し、空間３９に入り込んだ中空部３４は取付基部３１の一側面３１ａのフランジ付け根部側に弾接するようになっている。
【００２７】
このとき、中空部３４における、荷重曲線は、図６に示すようなグラフになっている。すなわち、中空部３４にドア３が弾接していない図１の状態（Ａ）から、ドア３が弾接した図２の状態（Ｂ）になるまでは荷重は大きくなるが、図３の状態（Ｃ）になるにつれ、中空部３４にかかる荷重は断面略く字状の第一柱部３２と断面略逆く字状の第二柱部３３とがさらに湾曲変形することによって吸収されるので荷重はその後は略平担となる。やがて、空間３９に入り込んだ中空部３４が取付基部３１の一側面３１ａに弾接し干渉し始めた図４の状態（Ｄ）をこえて、ドアオーバーストローク状態（Ｅ）になると、中空部３４にかかる荷重は急激に上昇し、実験した結果、図２の状態（Ｂ）の略３倍にも達した。
【００２８】
このように、最終的に中空部３４を取付基部３１の一側面３１ａに弾接させ、荷重を急激に上昇させると、ドア３の完閉時にオーバーストロークによるドア振動を小さく抑制することができるので、その結果、ドア閉時の閉まり音を抑えることができる。
【００２９】
【発明の効果】
以上のとおり請求項１に記載のウェザーストリップによれば、断面略く字状の第一柱部の先端と、断面略逆く字状の第二柱部の先端とで支持された中空部をドア完閉時には、両柱部間に形成された空間に入り込ませ、取付基部の一側面に弾接させるようにするので、これにより荷重は急激に上昇し、ドア完閉時にオーバーストロークによるドア振動を、従来の環状やパンタグラフ状の中空シール部を有するウェザーストリップに比して小さく抑制することができる。
したがって、ドア閉時の閉まり音を小さく抑えることができる。
【００３０】
また、空間を形成する両柱部の先端に中空部が設けられているので、たとえコーナー部にウェザーストリップを使用した場合でも、従来の環状やパンタグラフ状の中空シール部に比して中空部や両柱部のコーナー内側への倒れは小さいため、Ｒ追従性が特に悪くなることはなく、折れしわの発生が抑制される。
したがって、パッドなどの副資材を中空の部位に挿入して倒れを防止する必要はないので、特にコスト高になることもない。
【００３１】
また、中空部の大きさを、第一柱部と第二柱部間に形成された空間の大きさよりも小さくしたので、中空部がドアに弾接して押されたときに空間内に確実に入り込み、その後、取付基部の一側面に弾接することを容易にする。
【００３２】
また、請求項２に記載の発明によれば、第一柱部の先端を中空部の車外側に接続し、第二柱部の先端を中空部の車内側に接続したので、第一柱部は中空部に対する略接線方向に沿って接続されることになり、その第一柱部の接続位置より車外側には段差は生じることなく、シール性が良い。また、第二柱部はフランジ付け根部側に大きくはみ出して変形することはなく、フランジ先端側にたわみ変形しやすくなる。
【００３３】
さらに、請求項３に記載の発明によれば、第二柱部の中空部への接続部付近の肉厚を、第一柱部の肉厚より薄くし、中空部が取付基部の一側面に弾接したときに、中空部が取付基部の一側面に対してフランジ付け根部側の位置に納まるようにしたので、第二柱部はフランジ付け根部側に大きくはみ出さず、フランジ先端側にたわみ変形しやすくすることがより確実になる。
【図面の簡単な説明】
【図１】本発明の実施形態に係るウェザーストリップが取付けられた状態を示す断面図である。
【図２】図１に示すウェザーストリップにドアが弾接してウェザーストリップが変形した状態を示す断面図である。
【図３】図１に示すウェザーストリップにドアが弾接してウェザーストリップが図２の状態よりも変形した状態を示す断面図である。
【図４】図１に示すウェザーストリップにドアが弾接してウェザーストリップが図３の状態よりも変形し、中空部が取付基部に弾接した状態を示す断面図である。
【図５】図１に示すウェザーストリップにドアが弾接してウェザーストリップが図４の状態よりも変形し、中空部が取付基部に弾接した状態を示す断面図である。
【図６】本発明の実施形態に係るウェザーストリップの中空部に関する荷重曲線を示すグラフである。
【図７】従来例に係るウェザーストリップを示す斜視図である。
【図８】従来例に係る他のウェザーストリップを示す断面図である。
【図９】従来例に係るウェザーストリップの中空シール部に関する荷重曲線を示すグラフである。
【符号の説明】
１ドア開口縁部
２フランジ
３ドア
４内装材
１０，２０ウェザーストリップ
１１，２１取付基部
１２，２２中空シール部
１５折れしわ
３０ウェザーストリップ
３１取付基部
３１ａ側面（一側面）
３１ｂ側面
３１ｃ底面
３２第一柱部
３２ａ車外側の厚肉部
３２ｂ車内側の厚肉部
３３第二柱部
３３ａ厚肉部
３３ｂ薄肉部
３４中空部
３５，３６リップ部
３７リップ部
３８芯金
３９空間
４０突部
Ａ弾接しはじめ状態
Ｂ車両建付バラツキ下限状態
Ｃ設計基準圧縮状態
Ｄ車両建付バラツキ上限状態
Ｅドアオーバーストローク状態
Ｇドアガラス
ｍ基線[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a weather strip that is attached to a flange provided at an edge of an automobile door opening and seals a gap between a door and a vehicle body.
[0002]
[Prior art]
Weather stops 10 and 20 as shown in FIGS. 7 and 8 are attached to the flange provided at the door opening edge of the automobile, and are elastically contacted with the door to seal the gap between the door and the vehicle body.
The weather strips 10 and 20 are formed by integrally forming hollow seal portions 12 and 22 that are in direct contact with a door on mounting base portions 11 and 21 having a substantially U-shaped cross section attached to a flange. As the cross-sectional shape, an annular shape shown in FIG. 7 and a pantograph shape shown in FIG. 8 are widely known.
[0003]
The load curves in the hollow seal portions 12 and 22 having the cross-sectional shapes shown in FIGS. 7 and 8 are graphs as shown in FIG. That is, immediately after the hollow seal portions 12 and 22 are brought into elastic contact with the door, the load temporarily increases. However, the hollow seal portions 12 and 22 themselves are completely crushed so that the bottoms of the mounting base portions 11 and 21 are bottomed. Since it does not deform so much as it strikes, it is generally flat after that, and the load does not rise more rapidly until the bottom strike occurs.
Therefore, the vibration of the door due to the overstroke increases when the door is closed, and the vibration noise causes deterioration of the closing sound when the door is closed.
[0004]
Further, in the hollow seal portions 12 and 22 having the cross-sectional shapes shown in FIGS. 7 and 8, the R followability at the corner portion is poor and the hollow seal portions 12 and 22 are inclined to the inside of the corner. There was a problem of generating.
In order to prevent this, a secondary material such as a pad is inserted into the hollow seal portions 12 and 22 and the cost is increased accordingly.
[0005]
On the other hand, there is one in which the generation of the crease 15 as shown in FIG. 7 is stopped by devising the cross-sectional shape of the hollow seal portion instead of inserting a secondary material such as a pad (for example, , See Patent Document 1).
[0006]
[Patent Document 1]
JP 2001-287601 A (page 3, FIG. 2, FIG. 4)
[0007]
[Problems to be solved by the invention]
However, according to the invention described in Japanese Patent Laid-Open No. 2001-287601, it is possible to prevent the occurrence of the crease 15, but it is not possible to adequately regulate the door vibration.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide a weather strip that has good R followability and that can reduce door vibration and reduce vibration noise.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a weather strip (30) according to claim 1 of the present invention has a substantially U-shaped cross section attached to a flange (2) provided at a door opening edge (1) of an automobile. The mounting base (31) and the flange (2) front end side of the mounting base portion (31) on the vehicle outer side surface (31a) are integrally formed on the front end side of the flange (2). The first pillar portion (32) having a shape and the flange (2) base portion side of the mounting base portion (31) on the vehicle outer side surface (31a) are integrally formed on the flange (2) base portion side and bulge toward the flange (2) base portion side. The second column part (33) having a substantially inverted cross-sectional shape, and the tip of the first column part (32) and the tip of the second column part (33), and the door (3) A hollow portion (34) that elastically contacts the door (3) when closed,
The size of the hollow portion (34) is made smaller than the size of the space (39) formed between the first column portion (32) and the second column portion (33), and the door (3) is completely closed. As the state is reached, the first pillar portion (32) and the second pillar portion (33) are further curved, and the space (39) in which the hollow portion (34) is formed between both pillar portions (32, 33). ) And elastically contact one side surface (31a) of the mounting base portion (31), and the hollow portion (34) is elastically contacted with the one side surface (31a) of the mounting base portion (31). The load applied to (34) is rapidly increased .
[0011]
The invention according to claim 2 is the invention according to claim 1 , wherein the tip of the first column portion (32) is connected to the vehicle exterior side of the hollow portion (34), and the second column portion ( 33) is connected to the inner side of the hollow portion (34).
[0012]
Furthermore, the invention according to claim 3 is the invention according to claim 1 or 2 , wherein the thickness of the second pillar portion (33) in the vicinity of the connection portion to the hollow portion (34) is the first thickness. When the hollow portion (34) is elastically contacted with one side surface (31a) of the mounting base portion (31), the hollow portion (34) is made thinner than the thickness of the column portion (32). ) With respect to one side (31a) of the flange (2) at the base side .
[0013]
Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.
[0014]
According to the first aspect of the present invention, the door is elastically contacted with the hollow portion supported by the tip of the first pillar portion having a substantially square cross section and the tip of the second pillar portion having a substantially reverse cross section. Then, the load applied to the hollow part becomes large, and when the door is further elastically contacted, the first column part and the second column part are further curved and absorb the load applied to the hollow part. When the door is close to close, the hollow part enters the space formed between the two pillar parts (the first pillar part and the second pillar part) and elastically contacts one side of the mounting base part outside the vehicle. As a result, the load increases rapidly.
In this way, when the load applied to the hollow portion is suddenly increased, door vibration due to overstroke when the door is completely closed can be suppressed to be smaller than that of a weather strip having a conventional annular or pantograph-shaped hollow seal portion. As a result, the closing sound when the door is closed can be suppressed.
[0015]
In addition, since the hollow portion is provided at the tip of both column portions forming the space, even if a weather strip is used for the corner portion, the hollow portion or the pantograph-shaped hollow seal portion is less than the conventional hollow seal portion. Since the falling of the both pillars toward the inside of the corner is small, the R followability is not particularly deteriorated, and the occurrence of creases and wrinkles is suppressed.
[0016]
In addition, since the size of the hollow portion is smaller than the size of the space formed between the first pillar portion and the second pillar portion, the hollow portion is surely placed in the space when pressed against the door. It is easy to enter and then elastically contact one side of the mounting base.
[0017]
According to the invention described in claim 2, since the tip of the first column portion is connected to the vehicle exterior side of the hollow portion, and the tip of the second column portion is connected to the vehicle interior side of the hollow portion, the first column portion Are connected along a substantially tangential direction with respect to the hollow portion, and there is no step on the vehicle outer side from the connection position of the first column portion, and the sealing property is good. Further, the second column portion does not protrude greatly to the flange base portion side and is not deformed, and is easily bent and deformed to the flange tip side.
[0018]
Further, according to the invention described in claim 3, the thickness of the vicinity of the connection portion to the hollow portion of the second column portion is made thinner than the thickness of the first column portion, and the hollow portion is provided on one side surface of the mounting base portion. When the elastic contact is made, the hollow part fits in the position of the flange base with respect to one side of the mounting base, so the second column part does not protrude greatly to the flange base, but bends to the flange tip. It becomes more certain to make it easy to deform.
[0019]
Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
A weather strip 30 according to an embodiment of the present invention is attached to a flange 2 provided at a door opening edge 1 of an automobile, elastically contacts the door 3, and is deformed in the order shown in FIGS. The flange 2 is provided substantially parallel to the door glass G when the door is closed in the state shown in FIG.
[0021]
The weather strip 30 has a base portion at the front end side of the flange 2 of the side surface 31a located on the vehicle outer side of the mounting base portion 31 and the mounting base portion 31 having a substantially U-shaped cross section composed of both side surfaces 31a, 31b and a bottom surface 31c. The base portion is integrally formed on the base portion side of the flange 2 of the one side surface 31a of the mounting base portion 31 and the first column portion 32 having a substantially square cross section that is integrally formed and curves and bulges toward the front end side of the flange 2. And is supported by the second column portion 33 having a substantially inverted cross section that bulges toward the base side of the flange 2, and the tip of the first column 32 and the tip of the second column 33, And a hollow portion 34 that elastically contacts the door 3 when the door 3 is closed.
[0022]
Lip portions 35 and 36 for holding the flange 2 are formed inside the both side surfaces 31a and 31b of the mounting base portion 31, and a lip portion 37 for covering the interior material 4 is formed outside the side surface 31b. A cored bar 38 having a substantially U-shaped cross section is embedded in the mounting base 31.
[0023]
The first pillar portion 32 having a substantially square cross section is composed of a thick portion 32a on the outside of the vehicle and a thick portion 32b on the inside of the vehicle, and the end of the thick portion 32a on the outside of the vehicle is formed in the hollow portion 34. The end of the thick part 32 b is connected to the vehicle outer side surface 31 a of the attachment base 31. Further, the second column portion 33 having a substantially inverted cross-sectional shape opposite to the first column portion 32 having a substantially cross-sectional shape is composed of a thick portion 33a and a thin portion 33b. The end portion is connected to the end portion of the vehicle outer side surface 31 a of the attachment base portion 31, and the end portion of the thin portion 33 b is connected to the hollow portion 34.
In this way, the hollow portion 34 is elastically contacted with the door 3 by making the hollow portion 34 side of the first column portion 32 the thick portion 32a and making the hollow portion 34 side of the second column portion 33 the thin portion 33b. When pressed, the hollow portion 34 is placed in a position on the base portion side of the flange 2 with respect to the side surface 31a of the mounting base portion 31. At this time, the second pillar portion 33 does not protrude greatly toward the flange base portion, and is easily bent and deformed toward the flange tip side.
In addition, in the side surface 31 a of the mounting base portion 31, the distance between the base portion of the first column portion 32 and the base portion of the second column portion 33 is such that the hollow portion 34 that is elastically pressed against the door 3 is the side surface of the mounting base portion 31. It is larger than the width of the hollow portion 34 so that it can be elastically contacted with 31a.
[0024]
The front end of the first column portion 32 is connected to the vehicle exterior side of the hollow portion 34, and the front end of the second column portion 33 is connected to the vehicle interior side of the hollow portion 34. That is, as shown in FIG. 1, when a base line m that is substantially parallel to the direction in which the flange 2 extends is drawn so as to pass through the approximate center of the cross section of the hollow part 34, the hollow part 34 that is on the vehicle outer side than the base line m. The tip of the first pillar portion 32 is connected to the position of the first pillar portion 32, and the tip of the second pillar portion 33 is connected to the position of the hollow portion 34 that is on the vehicle inner side than the base line m.
According to this, the first column part 32 will be connected along a substantially tangential direction with respect to the hollow part 34, and there will be no step on the vehicle outer side from the connection position of the first column part 32. Good sealing performance. Further, the second column portion 33 is easily bent and deformed toward the flange tip side without greatly protruding and deforming toward the flange root portion side.
[0025]
In addition, the size of the hollow portion 34 is smaller than the size of the space 39 formed between the first column portion 32 and the second column portion 33, and the hollow portion 34 is elastically pressed against the door 3 and pushed. When it is done, it enters into the space 39. Since the hollow portion 34 is provided at the tip of both the pillar portions 32 and 33 forming the space 39, even when the weather strip 30 is used at the corner portion, the R followability is not particularly deteriorated, and the generation of the crease and wrinkle occurs. It is suppressed.
Further, a protrusion 40 is provided on the outer side of the hollow portion 34 and on the flange base portion side. By providing this protrusion 40, the seal width can be increased with respect to the variation in the door installation with respect to the body, so that the sealing performance is improved.
[0026]
When the door 3 is gradually closed from the attached state of the weather strip 30 shown in FIG. 1 and the door 3 is brought into elastic contact with the hollow portion 34, as shown in FIGS. The two pillar portions 33 are curved more than the case shown in FIG. 1, and the hollow portion 34 enters the space 39 formed between the first pillar portion 32 and the second pillar portion 33. As shown in FIG. 4, when the door 3 is in a completely closed state, the first column portion 32 and the second column portion 33 are further curved, and the hollow portion 34 that has entered the space 39 is one side surface 31 a of the attachment base portion 31. It is designed to be elastically contacted with the flange base.
[0027]
At this time, the load curve in the hollow part 34 is a graph as shown in FIG. That is, the load increases from the state (A) in FIG. 1 in which the door 3 is not elastically contacted to the hollow portion 34 to the state (B) in FIG. 2 in which the door 3 is elastically contacted, but the state in FIG. As C), the load applied to the hollow portion 34 is absorbed by further bending deformation of the first column portion 32 having a substantially square cross section and the second column portion 33 having a substantially reverse cross section. After that, it becomes almost flat. Soon, the hollow portion 34 that has entered the space 39 comes into elastic contact with one side surface 31a of the mounting base 31 and starts to interfere with the state (D) in FIG. The load increased rapidly, and as a result of the experiment, it reached approximately three times the state (B) of FIG.
[0028]
Thus, if the hollow portion 34 is finally elastically contacted with the one side surface 31a of the mounting base 31 and the load is rapidly increased, door vibration due to overstroke can be suppressed to a small level when the door 3 is completely closed. As a result, the closing sound when the door is closed can be suppressed.
[0029]
【The invention's effect】
As described above, according to the weather strip of the first aspect, the hollow portion supported by the tip of the first pillar portion having a substantially square cross section and the tip of the second pillar portion having a substantially reverse cross section in cross section is provided. When the door is closed, it enters the space formed between both pillars and elastically contacts one side of the mounting base, so the load increases rapidly, and the door vibrates due to overstroke when the door is closed. Can be suppressed smaller than a weather strip having a conventional annular or pantograph-shaped hollow seal portion.
Therefore, it is possible to suppress the closing sound when the door is closed.
[0030]
In addition, since the hollow portion is provided at the tip of both column portions forming the space, even if a weather strip is used for the corner portion, the hollow portion or the pantograph-shaped hollow seal portion is less than the conventional hollow seal portion. Since the falling of the both pillars toward the inside of the corner is small, the R followability is not particularly deteriorated, and the occurrence of creases and wrinkles is suppressed.
Therefore, it is not necessary to insert a secondary material such as a pad into the hollow portion to prevent the collapse, and the cost is not particularly increased.
[0031]
In addition, since the size of the hollow portion is smaller than the size of the space formed between the first pillar portion and the second pillar portion, the hollow portion is surely placed in the space when pressed against the door. It is easy to enter and then elastically contact one side of the mounting base.
[0032]
According to the invention described in claim 2, since the tip of the first column portion is connected to the vehicle exterior side of the hollow portion, and the tip of the second column portion is connected to the vehicle interior side of the hollow portion, the first column portion Are connected along a substantially tangential direction with respect to the hollow portion, and there is no step on the vehicle outer side from the connection position of the first column portion, and the sealing property is good. Further, the second column portion does not protrude greatly to the flange base portion side and is not deformed, and is easily bent and deformed to the flange tip side.
[0033]
Further, according to the invention described in claim 3, the thickness of the vicinity of the connection portion to the hollow portion of the second column portion is made thinner than the thickness of the first column portion, and the hollow portion is provided on one side surface of the mounting base portion. When the elastic contact is made, the hollow part fits in the position of the flange base with respect to one side of the mounting base, so the second column part does not protrude greatly to the flange base, but bends to the flange tip. It becomes more certain to make it easy to deform.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a state in which a weather strip according to an embodiment of the present invention is attached.
FIG. 2 is a cross-sectional view showing a state where the weather strip is deformed by elastic contact of the door with the weather strip shown in FIG. 1;
3 is a cross-sectional view showing a state in which the weather strip is deformed more than the state of FIG. 2 due to the elastic contact of the door with the weather strip shown in FIG. 1;
4 is a cross-sectional view showing a state in which the door is elastically contacted with the weatherstrip shown in FIG. 1, the weatherstrip is deformed more than the state of FIG. 3, and the hollow part is elastically contacted with the mounting base.
5 is a cross-sectional view showing a state where the door is elastically contacted with the weatherstrip shown in FIG. 1, the weatherstrip is deformed more than the state of FIG. 4, and the hollow part is elastically contacted with the mounting base.
FIG. 6 is a graph showing a load curve relating to a hollow portion of a weather strip according to an embodiment of the present invention.
FIG. 7 is a perspective view showing a weather strip according to a conventional example.
FIG. 8 is a cross-sectional view showing another weather strip according to a conventional example.
FIG. 9 is a graph showing a load curve related to a hollow seal portion of a weather strip according to a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Door opening edge 2 Flange 3 Door 4 Interior material 10,20 Weather strip 11,21 Mounting base 12,22 Hollow seal part 15 Wrinkle 30 Weather strip 31 Mounting base 31a Side (one side)
31b Side surface 31c Bottom surface 32 First pillar part 32a Thick part 32b outside the car Thick part 33 inside the car Second pillar part 33a Thick part 33b Thin part 34 Hollow part 35, 36 Lip part 37 Lip part 38 Core metal 39 Space 40 Protrusion A State of beginning of elastic contact B Vehicle installation variation lower limit state C Design standard compression state D Vehicle installation variation upper limit state E Door overstroke state G Door glass m Base line

Claims

A mounting base portion having a substantially U-shaped cross section that is attached to a flange provided at a door opening edge of an automobile, and a flange bulging toward the flange distal end side that is integrally formed on the flange distal end side of the vehicle outer side surface of the mounting base portion. A first pillar portion having a substantially cross-sectional shape and a second pillar having a substantially inverted cross-section shape that is integrally formed on the flanged root side of the vehicle outer side surface of the mounting base and that bulges toward the flanged root side. And a hollow portion that is supported by the tip of the first column portion and the tip of the second column portion and elastically contacts the door when the door is closed,
The size of the hollow portion is made smaller than the size of the space formed between the first column portion and the second column portion, and the first column portion and the second column as the door is fully closed. The portion is further curved so that the hollow portion enters the space formed between the two pillar portions and elastically contacts one side surface of the mounting base portion, and the hollow portion elastically contacts the one side surface of the mounting base portion. A weatherstrip characterized by rapidly increasing the load applied to the hollow part .

2. The weather strip according to claim 1, wherein a tip end of the first column portion is connected to an outer side of the hollow portion and a tip end of the second column portion is connected to an inner side of the hollow portion.

When the thickness of the second column portion near the connecting portion to the hollow portion is made thinner than the thickness of the first column portion , the hollow portion is elastically contacted with one side surface of the mounting base portion. weather strip according to claim 1 or 2 parts is characterized in that as fit to a position of the flange base portion side with respect to one side surface of the mounting base.